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Apr 21, 2009 | 09:23 AM

tmck40

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Junior Member

Joined: Apr 2009

Posts: 9

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Car: 89z28

Engine: 5.7 tpi

Transmission: t5

wiring

i was thinking of makeing my owne wiring harness and was looking for computer pin diagrams for a 85 tpi

Apr 21, 2009 | 09:29 AM

jkris53406

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Joined: Jan 2003

Posts: 330

Likes: 27

From: Raymond, Wi

Car: 87 Formula, 91 Trans Am

Engine: 355 tpi, 305tpi

Transmission: 700r4, 700r4

Re: wiring

There is a book from suncoast conversions that is a tremendous source of info for tpi iring. It deals with 86-89 MAF harnesses because the 85 has a unique computer that is not compatible with any other years. The 86-88 ecm is the same just different proms and can be interchanged. The 89 ecm is also the same but has VATS. Good luck!