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[caldwell2015]

HI we are new to this site and need wiring diagram for tbi in to 85 silverado
:yikes:

[fastacton]

Welcome! There are plenty of wiring diagrams here. Unless you already have the system you want to install, I recommend spending some time here looking at your options as there are a few different computers/harnesses to go with. If you already have what you want to install, then look in the thread for that ECM for the diagrams.