If there's any site out there that can help,it's you guys!! Im a new guy here, so if this is posted in the wrong area im sorry. I've got a 92 350/4l80e with a 16147060 ECM. I bought an aftermarket speedo and took a shot at wiring it up. My question is which wire do I hook signal to? I've got it hooked to the vssb (C15 lt blue/black) speedo signal. I looked on autometer's site and they show it hooked to the speed sensor. I checked the wires and their not shorted or broke and I have a new speed sensor. So my question is does it hook to (C12) or (C7) or do I have another problem? Thanks in advance for the replies