dash harness opportunity
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Joined: Dec 2012
Posts: 808
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From: Tucson, AZ
Car: 88 GTA Notchback
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: don't know
dash harness opportunity
I have an opportunity to grab a dash harness out of an 89 TBI Auto Formula (because I'm not paying for it 
) to replace my hacked and mutilated bundle of dash wires. Would this be a direct swap harness (with minimal to no mods) for my 88? Thanx.
) to replace my hacked and mutilated bundle of dash wires. Would this be a direct swap harness (with minimal to no mods) for my 88? Thanx. 
Joined: Aug 1999
Posts: 5,259
Likes: 459
From: RI
Car: 1984 Camaro Berlinetta
Engine: LT1
Transmission: T56 6-speed
Axle/Gears: 4.11 LS1 Rear End
Re: dash harness opportunity
TBI wiring and TPI wiring are NOT directly compatible.
Wiring in Digital Dash cars is not compatible with Analog dash cars.
Wiring in Digital Dash cars is not compatible with Analog dash cars.
Thread Starter
Senior Member
iTrader: (1)
Joined: Dec 2012
Posts: 808
Likes: 5
From: Tucson, AZ
Car: 88 GTA Notchback
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: don't know
Re: dash harness opportunity
Could the tbi stuff ( presuming it not totally integrated into the connectors) be replaced with the old tpi stuff? Or would that basically constitute a rewiring of the harness?
Joined: Aug 1999
Posts: 5,259
Likes: 459
From: RI
Car: 1984 Camaro Berlinetta
Engine: LT1
Transmission: T56 6-speed
Axle/Gears: 4.11 LS1 Rear End
Re: dash harness opportunity
Connecting a TBI harness to a TPI harness isn't impossible - but it's FAR from plug and play. Changes in the Speedo System, Power distribution, & Electric fan are just a few of the incompatible systems. I wouldn't bother converting unless I HAD to for some reason. IMO - you better off buying/getting the correct harness.
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