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Wiring harness

Must be pretty much the same with the exception as you say Robert the boost gauge wires ...

I got a very nice spare 1989 GTA dash harness as spare for mine just in case and as far as I can tell they are identical but not sure how the boost gauge wires are integrated in the TTA harness.

However if you do get a harness be aware that they changed during the years so getting a 1989 GTA one will ensure it's as close as you can ever get.
 
I do know they used a pigtail on the map senor for the boost gauge to work, also i'm not sure if they offered a digital gauge's in '89 like they did in '88.
 
robert lee said:
I do know they used a pigtail on the map senor for the boost gauge to work, also i'm not sure if they offered a digital gauge's in '89 like they did in '88.
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That's for calibration to get them to read correctly. So that's part of the engine harness.

So not sure (and I can look at it one of these days) where the wires run under the dash from the connector to the gauges.
 
Jan Larsson said:
That's for calibration to get them to read correctly. So that's part of the engine harness.

So not sure (and I can look at it one of these days) where the wires run under the dash from the connector to the gauges.
Click to expand...

Yep your right, funny thing is when you install a Alky kit Juilo said you HAVE to remove the pigtail, i meant to ask him about that..
 
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