now to the most dreaded part, WIRING!!!!! i understand the new harness to the motor & ECU. what i'm having problems with is figuring out what to keep on my truck harness & where to tie in for the speedo, tach, oil pressure, & temp. i'm trying to remove all the engine side from my harness & just have the body side left, if that makes sense. there's 2 plugs on the firewall, main bulkhead on the driver side & i'm guessing the one on the passenger side is for the heat & a/c? if anyone has a diagram for these plugs that would be great, or if someone has done this swap in a 96-98 & are running only the LS ECU please get with me. i'd like to talk to someone on the phone so i can figure out what i'm missing here.