Area Representative Richard Price Posted September 20, 2018 Area Representative Share Posted September 20, 2018 I'm in the process of making up a bespoke engine loom for an engine transplant.I've only got access to EU3 bits to look at, but the loom needs to suit an alternator on an EU2 car.I believe the EU2 alternators have just the main output power cable (linked onto the starter motor feed from the battery), and a single, brown/yellow core going to the charge indicator to provide excitation.How is that brown/yellow core connected to the alternator? Is it a molded plastic connector (if so what is it, so I can get one) , or simply a spade connector? Link to comment Share on other sites More sharing options...
7 wonders of the world Posted September 20, 2018 Share Posted September 20, 2018 I would try your local auto electrical place, if they repair alternators they can usually help with the plugs etc, also fleabay theres usually sellers on there with a raft of different plugs complete with pins and seals. Link to comment Share on other sites More sharing options...
Paul Mason Posted September 20, 2018 Share Posted September 20, 2018 I've just bought one from Mid Ulster Rotating Electrics, can't for the life of me remember the website address. £9 odd including delivery. Quick, simple and really big range (AUDI VW SKODA 2 Pin Connector Bosch Valeo Alternator Plug 4D0971992 PL13-WL2 is the one I got) Link to comment Share on other sites More sharing options...
revilla Posted September 20, 2018 Share Posted September 20, 2018 Looks like both connections are just ring terminals (EU2 Alternator is YLE101520 or Bosch A115I-65A): Link to comment Share on other sites More sharing options...
Area Representative Richard Price Posted September 20, 2018 Author Area Representative Share Posted September 20, 2018 Gents,Thanks for your replies.'think Andrew is "on the money" with the two studs.'anyone know if the two studs are the same size? (I'm guessing the main one will be M8, the same as the EU3 alternators that I'm familiar with) Link to comment Share on other sites More sharing options...
revilla Posted September 20, 2018 Share Posted September 20, 2018 If you look here: https://www.autodoc.co.uk/car-parts/oem/yle101520Scroll down to the LUCAS ELECTRICAL Alternator equivalent part.It says "M8 B+ M5 D+".So I think that's your answer, M8 for the main output, M5 for the warning. Link to comment Share on other sites More sharing options...
TomB Posted September 20, 2018 Share Posted September 20, 2018 EBay! Link to comment Share on other sites More sharing options...
Area Representative Richard Price Posted September 20, 2018 Author Area Representative Share Posted September 20, 2018 It says "M8 B+ M5 D+".Yes. That looks likely to me. I can deal with that easily enough. Thank you. Link to comment Share on other sites More sharing options...
Jonathan Kay Posted September 23, 2018 Share Posted September 23, 2018 What's the smart way to provide electrical and weather protection over that type of connection?Jonathan Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted September 23, 2018 Leadership Team Share Posted September 23, 2018 Richard, the usual o/e connectors are a combined ring terminal and nut, a sort of captive nut arrangement although I'm not sure what the correct terminology is. From what I remember they're likely to be M5 & M8 as mentioned.Stu.Edited to add ... 8mm version here: http://www.automotiveconnectors.com/ring-terminalcaptive-nut-crimp-m8-10mm2.html Link to comment Share on other sites More sharing options...
revilla Posted September 23, 2018 Share Posted September 23, 2018 @Jonathan, they're not usually protected, they rely on the clamping force provided by the nut sealing the metal to contact to prevent corrosions between them. You could apply a little dielectric grease as for battery terminals I guess. Link to comment Share on other sites More sharing options...
Wrightpayne Posted September 24, 2018 Share Posted September 24, 2018 Richard,mine are exactly the type as described by Stu above - ring with captive nuts.Ian Link to comment Share on other sites More sharing options...
Wrightpayne Posted March 6, 2021 Share Posted March 6, 2021 I'm in the process of doing some wiring alterations on my K series concerning the FIA switch and the various power cables to be fitted after the switch. One of the things I want to do is make a short jump cable directly between the alternator and starter motor (which ultimately goes to the battery). Currently the 10mm cable goes right around the engine, hopping from engine to chassis and back again! I'm told the EU3 engines have the short jump cable already but use different connectors (Caterham sell the cable for the EU3) I cannot find an M6 to 10MM connector with a captive nut, only M8. I think this will end up with a plain connector and separate nut.Any suggestions (I've messaged Richard directly). Link to comment Share on other sites More sharing options...
revilla Posted March 6, 2021 Share Posted March 6, 2021 The equivalent EU3 cable has plain ring terminals, with a separate washer and nut at each end. Link to comment Share on other sites More sharing options...
Wrightpayne Posted March 6, 2021 Share Posted March 6, 2021 Thanks Andrew :-) Link to comment Share on other sites More sharing options...
Wrightpayne Posted March 13, 2021 Share Posted March 13, 2021 Update. I found the Caterham part too long and the cable got very close to the 4-2-1 exhaust primaries. It may be different with the single pipe 4-1 manifold within the engine bay.I made up my own with 10mm lugs and cable from 12volt planet, using a 90 degree M8 lug onto the starter. Alternator was an M6 straight lug. I used a heat resistant sleeve. Ian Link to comment Share on other sites More sharing options...
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