Hello,


Ok, the engine is a 24x 6.0l LS and is attached to a TH400. The PCM was flashed to handle the TH400. I do have a wiring issue with it though. Vehicle is a 1990 2500 4x4 GMC Suburban. The original engine setup was a 350 with the TBI EFI. The single wire (orange) running from the TH400 runs up into a relay located in the engine compartment next to the old fuel pump relay. Out of the relay is two additional wires. A pink/black strip one which runs into the bulkhead and a tan/black strip one that went to the old ECM. I can't find any info on this wire but I'm assuming it was used to help control shifting and the kickdown during and after wide open throttle. I currently do not have the wire connected to anything. What do I need to do with this wire? Thank you for any help.