ELECTRICAL

Description & Picture

(may not be an exact representation)

Cross Reference

Alternator

Application: TR8 1980-82 EFI/AC

Triumph Part #: PRC1518 (Carb), DRC2567 (EFI)

Other Part #’s: Lester 14054, Lucas 23868, Lucas A2502, Bosch AL2134X

Other Vehicles: 77-79 Jaguar XJ12 and Jaguar XJS

References: ebay

Comments:

“I replaced my alternator a number of years ago with the following, and I might suggest going to your local parts store or website and requesting the Lester alternator No. 14054. Some parts stores might recognize the part number, 14054 on their systems without having to mention Lester. This is off the 77-79 Jaguar XJ12 and Jaguar XJS. I believe it is rated at 60 amps. This is a two wire alternator. There is no voltage sense wire connection. You will need to connect your large, brown battery wire and the small, thin brown and yellow wire to their respective posts. That's it. You can tape-off and isolate the thin, brown voltage sense wire which has the black plastic spade connector on its end. Here's a quick cross reference of part numbers for alternators from other manufacturers which are suppose to match up to the Lester No. 14054

1860143 --- Beck/Arnley

 23868 --- Lucas

 A2502 --- Lucas

 AL314X --  Bosch

Hopefully this is of some help to you.”

– Kirk Jonker

Alternator – GM replacement

Application: TR7/8 all models

Triumph Part #: All models TR7 or TR8

Other Part #’s: Delco (CS130) 210208854 & 21022863

Other Vehicles: 1991-95 Saturn 1.9L engine (116-L4 SOHC), Pontiac Grand Am 3.1L, misc GM’s in early 1990’s

References: TR8CCA

Comments:

TR8CCA newsletter, issue 77 (pg 4) details the installation on a TR8, but the TR7 is similar. Some installations may require clocking of the front cover to orient the mounting ears correctly.

Alternator Pulley – 17ACR

Application: TR7 1977-82, TR8 1980-82

Triumph Part #: AEU1238, UKC7581 (TR7), AEU1281 (TR8)

Other Part #’s: Lucas 54202767

Other Vehicles: Triumph Spitfire 1500 1977-81, Rover 3500 1980-81

References: ebay

Comments:

Alternator Pulley – 25ACR

Application: TR8 1977-79

Triumph Part #: AEU1281 (TR8)

Other Part #’s: Lucas 54202768. Superseded to Lucas 54202786

Other Vehicles: Jaguar XJ6 1982-83

References: ebay

Comments:

Battery

Application: TR8

Triumph Part #: 586655

Other Part #’s:

Other Vehicles:

References: WWWedge e-mail list

Comments:

It can be difficult to get a battery that fits correctly in the TR8 battery tray and to which the stock cables fit. In the USA, the NAPA Legend 75 #7534 seems to be one that does fit, as witnessed by the comment below.

“I put it on the floor next to my old battery and it was EXACTLY the same size and the terminals were
in EXACTLY the correct locations. The stock battery holder fit PERFECTLY (once I removed the lifting handle that comes with the battery). For $105 plus tax, I was a happy camper.”

– Fred Smith

Brake Light Switch

Application: TR7/8

Triumph Part #: 134259

Other Part #’s: Intermotor 51590, NAPA # SL 310, SMB421

Other Vehicles: Triumph TR250, TR6, Spitfire

References: jclaythompson web site & ebay

Comments:

NAPA # SL 310 out of a mid 80's Honda, fits but has a metal case

Note: this switch is activated by the brake pedal.

Flasher Unit

Application: T R7 1975-76

Triumph Part #: SFB114

Other Part #’s: Lucas SFB114, 35048

Other Vehicles: Aston Martin DBS 1972 – 1975, Austin Healey Sprite 1968 – 1969, Jaguar XKE V12 1971 – 1974, XJ6 1970 – 1975, Jensen Interceptor 1973 – 1975, Lotus Elan 1970 – 1973, MGB 1968 – 1980, Midget 1968 – 1980, Rolls Royce Camargue 1976, Sunbeam Alpine 1968 – 1971, Triumph TR6 1969 – 1975, TR250 1968 – 1969, Spitfire 1971 – 1976, GT6 1971 – 1973

References: ebay

Comments:

12 volt, 21Wx2x5W.

Fuses

Application: TR7/8 1975-81

Triumph Part #: Too many to list....

Other Part #’s:

Other Vehicles: Almost any British vehicle of the same vintage

References: TR8CCA

Comments:

TR8CCA newsletter, issue 61 (pg 18) Odd Hedberg describes the differences in ratings (maximum blow and continuous) as well as dimensions between the old Lucas and the newer industry standard fuses, more commonly available today.

Headlight buckets

Application: TR7 1975-76

Triumph Part #: TKC3738

Other Part #’s: AEU-1900

Other Vehicles: Jaguar XJS I/II/III

References: http://www.jamesburt.com/Jaguar/JagTech/JagTech_Parts_XJ6_Substitutes.html#Electrical (non-FI or ignition)

Comments:

“It's been a five month search for the big cat lights. I've contacted many for pricing -- was always more than I was willing to pay. Then it dawned on me "how stupid, you own a TR7 parts car and it's got 7 inch head lights." I don't know how many times I looked at the Triumph without the "Lights" going on. The light assembles are a fit. All I did is drill the four pop rivets out of the Triumph adapter and I had all but the chrome Jag rings in hand. Better yet the leads were the exact length required and the same color. I just pulled the new leads in with the old ones and plugged them in -- 2 hours max. Those of you who made the switch are absolutely correct the front end looks right now -- pictures don't do it justice.”

- Lew Plummer

Headlight motors

Application: TR7/8

Triumph Part #: PKC1287

Other Part #’s: Lucas 75905-R, Interchange 75857-R 75945-R, PKC1287/R

Other Vehicles: Lotus Esprit/Elite., TVR Wedge (Tasmin, 280i, 350i, 350SE, 450SE, SEAC) 1980-88

References: ebay, Lotus Esprit owners web site, http://www.tvrwedgepages.co.uk/maintenance.html, WWWedge e-mail list, TR8CCA newsletter

Comments:

Numerous web references refer to the Lotus headlight motors as having been sourced from the TR7 parts bin at Triumph. Some modification to the actuator arms and electrical connectors may be necessary.

DIODE repair:
“When repairing failed diodes within the unit, the following parts can be substituted: 1kV, 2.5A diodes from Radio Shack part no 276-1114”.

– David Elsberry (See also TR8CCA newsletter, issue 53 (pg 6) )

Horns

Application: TR7/8

Triumph Part #: TKC2460 (Hi), TKC2461 (Lo)

Other Part #’s:

Other Vehicles: MGB

References: ebay

Comments:

This style horn was used in most British cars of the 1960s, and 1970s including MGB, MG Midget and 1100, Triumph TR4, TR250, TR6, TR7, Spitfire, later Austin-Healey 3000, Jaguar E-type, late Mark 2 and X, Land Rovers, and practically every other 12 Volt British car of the period.

Ignition Switch

Application: TR7/8

Triumph Part #: RKC3984 (1979 ->)

Other Part #’s: Lucas TKC3390

Other Vehicles: Triumph Spitfire 1977-80, Possibly the late model TR6 72/73 - on

References: Wedge e-mail list & ebay

Comments:

Instrument Cluster – Printed Circuit

Application: TR7/8

Triumph Part #: UKC2409 (non-pushbutton speedo), AEU1811(push button speedo)

Other Part #’s:

Other Vehicles:

References: Wedge e-mail list

Comments:

“The wiring connectors in the harness behind the dash were probably revised through the years to move wires around to different spots and the printed circuit stayed the same until 1981. I went home and dug out the Parts Catalogs. It is in fact the "push-button" instrument panel dash that has a different printed circuit board. So, anyone wanting to change the printed circuit panel should be able to find that all from 1975-1980 model years will fit TR7 and TR8. The 1981 version (part # AEU1811) will directly work in 1981 models to end of production.”

- David Huddleson

Instrument Panel Light Rheostat Switch

Application: TR7/8

Triumph Part #: TKC3936

Other Part #’s: Lucas 78545A, 78561, 78518

Other Vehicles: Austin Healy, Jaguar XJ6 1974 only, Land Rover, Lotus Esprit 1980 and Lotus Eclat 1977-80

MGB MG Midget Sprite, Triumph Spitfire, TR6, Rolls Royce Silver Shadow 1970 – 1972 Corniche 1971 – 1976

References: ebay

Comments:

Light – Door Courtesy light

Application: TR7/8

Triumph Part #: TKC3851 thru 1978, TKC5051 1979 on

Other Part #’s:

Other Vehicles: AM General Hummer H1 1998-01 interior map light, DeLorean DMC-12 1981-83 Dome Courtesy Light, Jeep Comanche 1986-92 interior B-pillar courtesy light, 1985 Alfa Romeo 33Ti, Renault ???

References: ebay

Comments:

Note: later TR7’s (1981?) had black trim bezels versus all earlier ones that were chrome.

TR8CCA newsletter, issue 36 (pg 38) for article on the Jeep Comanche interior lights. This solution also has an improved one piece electrical connector.

TR8CCA newsletter, issue 72 (pg 12) for article on the Hummer H1 interior lights.

See TWOA newsletter: issue 14 (pg 6) for a couple of articles.

Light - Boot Interior

Application: TR7/8

Triumph Part #: 151353

Other Part #’s:

Other Vehicles: Triumph TR6, Spitfire

References: ebay

Comments:

Light - Front Turn Signal Lens

Application: TR7/8

Triumph Part #: RTC1382 (Left), RTC1381 (Right)

Other Part #’s: UKC5132 (Left), UKC5133 (Right)

Other Vehicles: Morris Marina

References: jclaythompson’s web site

Comments:

Note the North American lens is all one colour orange. The european lens has two colours, orange for the turn signal and clear for the parking light.

Light - Rear License Plate Lamp Assembly

Application: TR7/8

Triumph Part #: UKC5205

Other Part #’s:

Other Vehicles: 1973 - 1976 Triumph TR6, GT6 MK3, or Stag MK2 , Jaguar XJ6: 1988-94, XJ6 Sovereign: 1990-93

References: ebay

Comments:

Oil Pressure Switch

( 3 wire )

presure switch.jpg

Application: TR7 75-76 (Fed), 75-79 (Calif), 1980(Fed & Canada w/ carbs) TR8 1981(UK carb)

Triumph Part #: GPS117(Early), GPS123 (Later)

Other Part #’s: KB 5063, Standard PS-64, GM parts (PN 3986857), AC-Delco (PN G1809), Federal Mogul/Carter (PN A68301), NA #OP6610 or #OP6617 or #OP618, SWG1356, NAPA BA 2011102, Standard PS140

Other Vehicles: Triumph 75-79 ½ Spitfire (California), 74-78 ½ Spitfire (Federal), 1966-76 TR6, 1973-79 Spitfire, 1971-73 GT6, 1975 Po PA/Echlin Pontiac Ventura, 1976-78 Pontiac Sunbird, 1976 Pontiac Astre, 1971-77 Chevy Vega, 1975-77 Chevy Monza

References: http://www.triumphtechnical.me/triumphtechnical/Parts_List.html, ebay, www.carcraft.com, TR8CCA newsletter

Comments:

Three prong Oil Pressure switch: 3 terminal, long body, 1/8" pipe thread (NPT 1/8 – 27).

Napa Echlin (brand) OP6610 is a direct match for the three wire oil sender – TR8CCA newsletter, issue 83, (pg2).

I went and bought the OP6610 oil pressure switch that everyone seems to recommend. Nice switch: 3 prongs, 1/8 NPT thread, long body, but it does not fit my car - not even close. My car by the way is a 1980 carb TR8 with a stock 3.5. I talked to Woody and he recommended (and sells) a Standard PS140 switch which has a shorter body, three prongs and a larger 1/4 NPT thread – which is an exact match for my failed switch.”

- Brian Lanoway (June, 2015)

“Some cars also have an adapter ( ERC1508 ) bushing to adapt a 1/4 NPT thread to a 1/8 NPT

switch.”

- Wayne Simpson  (June, 2015)

Oil Pressure Switch - Boot (3 wire )

Application: TR8 1981(EFI)

Triumph Part #: NSS

Other Part #’s: Standard S956

Other Vehicles:

References: WWWedge e-mail list

Comments:

The factory molded connector is made of unobtainium. Repairs can be made using generic 1/4-inch female-blade terminals or a three-prong, weather-resistant, molded-on, 56-series connector assembly: GM 12101928 (AC-Delco PT200) has a black PVC connector-shell; slightly more expensive GM 12085529 (AC-Delco PT139) has a high-temp TPE shell.

Standard PN S956 (see picture at left) is also a usable substitute.

“Got the 3-prong booted connector (STANDARD MOTOR PRODUCTS Part # S956) today. I can confirm it fits the 3-prong oil pressure sensor on my car. It fits snugly over the sensor body so should provide some weather protection. A bit pricey but a solution nonetheless. I haven't spliced it in yet, but that's now on the list. It comes with three heat-shrink crimp splices, too.”

- Benjamin Zwissler  (June, 2015)

Oil Pressure Switch (single wire)

Application: TR8 1981(EFI)

Triumph Part #: GPS117 (EFI)

Other Part #’s: Unipart GPS117, AC Delco #EP31

Other Vehicles: Triumph TR6

References: TR8CCA newsletter, Internet forums

Comments:

“I recently purchased Unipart GPS117 from ebay for my 3.5 EFI Rover V8. Came in a Unipart box labeled with the part number and also “09736 44/11/00 Made in England” The Invoice indicated a cross reference with Jaguar e-type, Triumph TR6, TR7, GT6, 2.5PI & Dolomite. It fits in the TR8 oil pump but requires the threaded adapter. It has a low cut-out pressure, because it sometimes turns the dash oil pressure light off while cranking the engine on the starter. ”

– Mark Elbers (2013)

TR8CCA newsletter, issue 30 (pg 3) John Dombey mentions that the TR6 single wire oil pressure switch is a direct swap for the TR8 EFI.

Radio

Application: TR7/8 1975-78

Triumph Part #: N/A

Other Part #’s:

Other Vehicles:

References: WWWedge e-mail list

Comments:

“If you don't need top shelf hifi quality, checkout the Pyle brand. Some of their models are very shallow and will fit in there nicely. Basically you want something without a CD player. The model I got (on EBay) is PLNR86B. Here are some pics. You'll see the lighting works well with the existing dash lights. (https://www.dropbox.com/sh/by82cbezwlwj2ng/AAD1lhKGrOjAhqeKeIDdti5ka?dl=0)”

- Randall Glass (August, 2015)

Reverse Switch – 4spd

Application: TR7/8 1975-78

Triumph Part #: Various Part #’s

Other Part #’s: Lucas 33765, GAE191

Other Vehicles: MG Midget 1500 1975-80

References: ebay

Comments:

Starter – Body and Armature

Application: TR7/8 1975-80

Triumph Part #: N/A

Other Part #’s:

Other Vehicles: Triumph

References: TR8CCA newsletter

Comments:

TR8CCA newsletter, issue 40 (pg 5) mentions a number of parts that interchange between TR8 and TR7 starters, including the body and Armature.

Starter - Drive gear

Application: TR7 1975-76

Triumph Part #: 520471

Other Part #’s: Lucas 54249034

Other Vehicles: Triumph Stag 1972-73 for starter numbers 25703, 25712, 25717, & 25648

References: ebay

Comments:

Starter – Solenoid

Application: TR7/8 1975-80

Triumph Part #: N/A

Other Part #’s: Replaces LUCAS: 73939, 76875, 76876, 76877, 76878, 76879, 76880, 76884, 76919, 76922, 76923, 76924, 76929, 76931, 76933, 76963, 76970, 76978, 76998, 77012, 77016, 77017, 77059, 77158, 96405, TOB117, TOB138, TOB159

Other Vehicles: (1968-89) Jaguar, MGB, Rover, Triumph Stag, Austin, Lotus

References: ebay

Comments:

Used On the following LUCAS STARTERS: 25165, 25359, 25359A, 25615, 25616, 25616A, 25616J, 25620, 25627, 25642, 25643, 25647, 25647A, 25648, 25654, 25674, 25674A, 25674E, 25684, 25687, 25687H, 25691, 25692, 25696, 25696A, 25696L, 25703, 25704, 25704A, 25704D, 25707, 25710, 25712, 25714, 25717, 25719, 25720, 25720A, 25720D, 25724, 25734, 25734A, 25734D, 25735, 25743, 25746, 25746A, 25756, 25756A, 25820, 26180, 26267, 28691

Dimensions :

Battery Term: . M8×1.25
Motor Term.: M8×1.25
Switch Term.: Male Spade
Relay Term.: Male Spade

Solenoid: 12 Volt, 4-Terminal
For: Lucas M100 Series DD Starters

Note: electrical connections may differ and require modification, between spade and ring terminals etc....

Water Temperature Gauge Sensor

Application: TR7 1975-81

Triumph Part #: GTR108

Other Part #’s: 137705, C34812, C40106, Interchange 13H9129 DAC2583

Other Vehicles: Jaguar 1974 E-Type, 1976-90 XJS, 1988 XJ6, 1981-87 XJ12, 1975-75 MGB, Rover 2000 1970-71, Triumph 1968-73 GT6, 1971-76 TR6, 1965-80 Spitfire(mk1-4, 1500) , 1971-73 Stag, Herald & Vitesse, TR5

References: ebay

Comments:

Thread: 5/8 x 18 UNF

Water Temperature Gauge Sensor

Application: TR8 EFI

Triumph Part #: GTR110

Other Part #’s:

Other Vehicles: TRIUMPH TR5-7 67-80, JAGUAR 72-97, MORGAN

References: ebay, WWWedge email list.

Comments:

Thread: 5/8 x 18 UNF

“The quick and dirty check is to ground the wire from the sensor (on the engine) and see if you get a full hot reading. (If it doesn’t, you either have a bad gauge or a wiring problem) If you want to know if it is reasonably accurate you can use a selection of resistors. Here is what I have archived and it seems to be pretty close.

TR8 temp sensor math

You can also do this with the temperature indication. The OEM temperature sender on the TR8 has the following temperature / resistance formula where R is in ohms, Temp is in degrees Celsius, and e is the exponential function 2.71828...

R = 5 + (4.4 * e^(-0.035 * (Temp - 172)))

Substituting a variable pot in place of the sending unit should allow you to calibrate the indication on your gauge. Here are some calculated and measured resistances for the OEM sender:

Temp   Calc R  Measured R

Deg C   Ohms     Ohms

 20        904

 30        639

 40        452

 50        320         332

 60        227         227

 70        161         158

 80        115         114

 90         83           85

110        60           60

110        44

- Dave Massey (June, 2015)

Voltage Regulator

Application: TR7/8

Triumph Part #: N/A

Other Part #’s: Lucas UCB104

Other Vehicles: MG MGB Midget GT Triumph Spitfire TR6 GT6

References: ebay

Comments:

Found this add on ebay, information not verified.

Windshield Washer pump

Application: TR7/8

Triumph Part #: GWW125

Other Part #’s: Lucas WSB100, Jaguar C36850, MG BHA5146

Other Vehicles: Triumph TR6 1969-76, Spitfire 1500 1974-80, Austin 1800 1962-74, Allegro 1973-83, Citroen 1980 –onward, Fiat 124 Coupe 1967-69, Ford Capri 1976-84, Escort Mk1, Mk2 up to 1980, Jaguar E-Type, S3, XLS, Land Rover Discovery, Land Rover, Range Rover, MGB GT & V8 1968-80, Midget 1275, 1500 1968-79, Mini 1963-1979, Rover 214 up to 1989, 218 1985-88, 800 from 10/1988, Yugo 101, 311, 511, 513 1983 onward

References: ebay

Comments:

Mounting Holes are 1 19/32" (40mm) apart

Windshield Wiper Motor (2 Spd)

Application: TR7/8

Triumph Part #: AAU4072

Other Part #’s: Lucas 75721, 75862, AEU1607-R

Other Vehicles: 1971-1974 Triumph Stag, 1968-1974 Jaguar Series one XJ6 & XJ12, 1971-1973 Jensen Interceptor

References: ebay

Comments:

Windshield Wiper –Grease

Application: TR7/8

Triumph Part #: N/A

Other Part #’s:

Other Vehicles:

References: Various Web sites and forums. Google it and you’ll see.

Comments:

The manual specifies three different lubricants when rebuilding or reassembling the Windshield wiper motor: Shell 41 oil, Molydbnum Disulphide & Ragosine Listate Grease. Unfortunately nobody in the world sells or knows where to get Ragosine Listate Grease. It's a product of a very old British refinery called the Ragosine Oil Company Ltd, now ROCOL. Rocol greases are now called Saphire and they don't list one as being a direct replacement.

Ragosine Listate was a Lithium based, extreme pressure grease for multipurpose automotive use with a high-melting point and high water resistant characteristics - same as Castrol LM or Shell Retinax A. The reason it's no longer available is it contained lead. Lucas would likely have started using a general purpose lithium grease as a replacement.

Other suggestions: “3-in-1” oil on the cable and White Lithium grease on the teflon gear.

“Rebuilt wiper motors I sold at NAPA usually had white lithium grease inside for the gears as it works well for both nylon and metal. It won't heat up and liquefy, nor does it attract moisture.”