1986 Accord Dx Alternator

[jenkinsauto]

I Have A 1986 Honda Accord Dx 2.0 Carb Motor And I Was Up Grading My Alternator To 165 Amp.when I Got The New Alt. I Started The Swap And Came To Realize That The Harness To My Alt. Is A 4 Wire.the New Alt.was Set Up For 3 Wire.so I Had To Send It Back To Get The 4 Wire Alt.they Said The 3 Wire Was For Carb And The 4 Wire Was For Fuel Injection.can Anyone Tell Me Whats Up With This?

[Hazwan]

This should help: https://www.3geez.com/forum/showthread.php?t=46908

[russiankid]

The carb'd motor should be a 3 wire to my knowledge.

[jenkinsauto]

Thats What I Thought To But The Harness Is Untouched And Is The 4 Wire.

[forrest89sei]

Maybe someone replaced the wires at one time?

You can run a 4 Wire on a Carb car, the extra wire is just a data wire for the ECU on efi cars, so it's just a extra wire to carb

[jenkinsauto]

Your Right But I Went And Got The 3 Wire Plug And Replaced My 4 Wire And When I Left The Extra Wire Unused My Battery Light Would Not Go Off.so It Must Be Used For Something..

[forrest89sei]

Your Right But I Went And Got The 3 Wire Plug And Replaced My 4 Wire And When I Left The Extra Wire Unused My Battery Light Would Not Go Off.so It Must Be Used For Something..

I have never heard of that on a carb car

[jenkinsauto]

No One Can Seem To Solve This Mystery.

[forrest89sei]

Well did you try hooking up the alt with the 4 wire plug?

[jenkinsauto]

Yes And It Works Perfectly Fine..so Does This Mean That I Have The Ecu In My Car?

[forrest89sei]

Is this a PGM-FI Converted DX?

[jenkinsauto]

I Dont Think So.it Looks All Stock To Me,2 Barrel Carb And All Those Vaccum Lines.

[ABC]

This is the same thing I found on my 86 LX.

https://www.3geez.com/forum/showthread.php?t=62862

No one seems to know. I don't mind as long as it runs alright.