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Thread: Hey guys update on instrument cluster wiring.

  1. #1
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    Default Hey guys update on instrument cluster wiring.

    I got all the wires lengthened and match. Everything seems to work except for the alternator gauge and the tach the alternator signal wire seems different on the base that the turbo cluster . I'm stuck I don't care if the tach rpms are not accurate as long as it works any help would be great

  2. #2
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    OK I need a lil help guys now the car is draining batteries fast 5 minutes tops and it's flat dead.

  3. #3
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    If you remove the basic cluster with the "alternator warning light", the alternator will not "turn on". You have to jumper the LG/R and GY/Y wires at the cluster harness connector C285 pins 10 & 11. This will bypass the missing warning light.
    Check for charging voltage at the battery terminals to confirm.

  4. #4
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    Are you following some instructions for this swap? If so, post the link so I can read it.
    Also, what car is the turbo cluster from?
    Last edited by softtouch; 03-03-2016 at 06:18 PM.

  5. #5
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    If a good battery drains in 5 min something should be getting very(and I mean VERY) hot... To pull a fully charged battery down that quickly would require a couple hundred amp draw, any wiring other than battery cables would be smoking...






    My other rides (that actually do run & drive)

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  6. #6
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    Quote Originally Posted by TurboCoupe50 View Post
    If a good battery drains in 5 min something should be getting very(and I mean VERY) hot... To pull a fully charged battery down that quickly would require a couple hundred amp draw, any wiring other than battery cables would be smoking...
    True, but I don't know how long he has been running it without the alternator working.
    Rereading his post, he did say batteries, implying he is trying different batteries,
    I guess I need more detailed feedback from him before I can get my head into this.

  7. #7
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    Thanks for the help guys I have just been going off of the wiring diagrams on cool cats and trial and error with a test light I think I saw a little smoke coming from the back of the alternator side of the cluster so I unplugged it and the battery. as far as I know the cluster is a 85,86 turbo stick car I bought it off of ebay mine is a base 5.0 car all the other guages work except for tax the alternator gauge and haven't tested the speedo I did lupe both gray and yellow wires with the green and red alt wire the battery died I'm waiting on a charger.

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    I have 2 gray/yellow stripe. /green with red stripe and white with blue stripe and a green with light green connected with yellow green and a spare ground.

  10. #10
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    I have 2 gray/yellow stripe. /green with red stripe and white with blue stripe and a green with light green connected with yellow green and a spare ground. Left to figure out still same no tach,amp smoke was loose wire touching

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