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Thread: 86 GLHS to 87 T2 LM Wiring

  1. #1
    boostaholic
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    86 GLHS to 87 T2 LM Wiring

    Can anyone provide the wiring diagrams at the logic module for the 86 GLHS and for an 87 T2 logic module? I would like to relocate the map sensor under the hood and utilize the 87 T2 style logic module.

    I know I will need to add some wiring for the under-hood map sensor, but I also would like to know if I need to move any other pins around while I'm at it. Since the car is a GLHS it is already wired for the 4 wire AIS motor. Let me know if you guys can help me out. I have factory service manuals for 1980, 88-91, but nothing for the logic module cars.

  2. #2
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: 86 GLHS to 87 T2 LM Wiring

    I think this should cover everything. IIRC You just need to move the two AIS wires and then run your MAP wires. Russ' site will show you the pins for the MAP if the following one doesn't.

    http://fwdmopar.50megs.com/T2conv.html

  3. #3
    boostaholic
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    Re: 86 GLHS to 87 T2 LM Wiring

    Somebody should put this together and submit it in the knowledge center! I am building a MS Word document that summarizes all the electrical changes. I'm still having trouble figuring out which two wires need to be switched around. The link has the MAP wiring, AIS wiring, and O2 wiring, but I'm not seeing the other change needed to run an 87T2 computer.
    Last edited by jckrieger; 12-30-2012 at 12:05 PM.

  4. #4
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: 86 GLHS to 87 T2 LM Wiring

    Yeah, it's not much. IIRC For a GLHS you just need to move the two AIS pins and then add the power and signal wire for the map, then splice into the sensor signal ground wire.

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