1976 Firebird instrument cluster

[Yngbld14]

I am looking at converting my old standard stock gauges to a set of Trans Am ralley gauges. Is it possible to do this swap without having to do a wiring harness change? I am trying to locate wiring diagrams for both to see the difference.

Thanx for any help
Dave

 

[Goatman]

If I remember correctly the harness is different because of the placment of the gauges ..
(the T/A cluster has a seperate pod) with gages the standard won't have..
I remember changing a few over Years ago ..
but I believe you had to do the engine and underdash harness..