Battery light on.

[S.A. supra]

I'm having some trouble with my aristo swap. my battery light will not turn off. I have had the alternator check and its good. battery is good, I double checked the wiring, and that checks out good. I just cant figure it out! it did turn off once for a couple of starts, but now its back on. any help would be appreciated.

 

[hvyman]

How did you wire up the alternator?

http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=042

 

[satx88supra]

Did you check fuses

 

[S.A. supra]

Alt pin# 1- L - Yellow to yellow mkiii harness
Alt pin#2- IG- Red/ Blue Stripe to Black/ yellow mkiii harness
Alt pin#3- S- White to White mkiii harness.

 

[S.A. supra]

Did you check fuses

What fuses?

 

[IndigoMKII]

Is the voltage regulator still hooked up on the alt? I'm not sure if it's an external regulator or not.

 

[satx88supra]

What fuses?

This

And the TSRM says to check the engine fuse (15A) on the drivers inside fuse panel.

 

[S.A. supra]

charge fuse is good.

 

[f00g00]

Your pins are off.
Pin 1 on ALT is white (you have them going correct) (your calling pin 1 pin 3)
Pin 2 on ALT is Y-G (yellow with green stripe) should go to your charge light
Pin 3 on ALT is B-Y ( black with yellow stripe) should go to AM1 on engine fuse box. (your calling pin 3 pin 1)

looks like you have 2 and 3 reversed but to be sure read with a meter.

 

[S.A. supra]

Son of ahhhh. I think you are right I was so worried about getting the wires correct, which they are. That I had not noticed that the plug was pinned wrong. I did pin that plug myself because the plug had cracked. Ill let you know later. Thanks for the help.

 

[S.A. supra]

can someone post a pic of their aristo alternator plug with wires to help me verify.

 

[S.A. supra]

Your pins are off.
Pin 1 on ALT is white (you have them going correct) (your calling pin 1 pin 3)
Pin 2 on ALT is Y-G (yellow with green stripe) should go to your charge light
Pin 3 on ALT is B-Y ( black with yellow stripe) should go to AM1 on engine fuse box. (your calling pin 3 pin 1)

looks like you have 2 and 3 reversed but to be sure read with a meter.

You were right! I pinned the damn plug wrong, all is good now. Time to get some insurance and get this one and a half year project on the road.

 

[f00g00]

Good to hear that.

 

[Suprapowaz!(2)]

You were right! I pinned the damn plug wrong, all is good now. Time to get some insurance and get this one and a half year project on the road.

:: facepalm ::

J/K, I'm glad someone was able to help with that. I sure wasn't. Let's get it going Mike!!

 

[S.A. supra]

Funny, how sometimes you need a extra pair of eyes to see the obvious.

 

[Suprapowaz!(2)]

Been there too many times.