Fiero Engine to Interior Wiring Harness (Page 1/1) BruhMans06 SEP 28, 04:52 PM So im working on planning out the wiring on my K24 project and have a fiero wiring question. on the fieros many of us know about the two connectors the engine harness runs from, the one on the right that runs to the ECU and the one on the left that runs through the firewall and into the dash. I'm trying to adapt all if not most of the electronics, like AC, Cooling fan and stuffs to the K engine from the left cable that runs to the dash (would take a photo but I'm currently 3 states away from home) but I don't know the pin layout. wondering if anyone has a wiring schematic or drawing such. would be great thanks much. 82-T/A [At Work] SEP 28, 11:02 PM You'll want to check the factory service manual for your year. The good thing is, this shouldn't be a difficult job. The Fiero's gauge cluster works entirely separately from the ECM, meaning that you can do an engine swap and as long a you can continue to supply the correct sensor voltage to the gauges, the gauges will work properly. That will be your biggest challenge, unless you intend to swap out the gauges. The only thing that's controlled by the ECM directly is the shift light (for manuals), I think the torque lock-up for automatics, and a partial control of the fan switch for Air Conditioning. Everything else... totally separate from the ECM.