Originally Posted by
Bear
When I did my 94 swap, I removed every wire from under the hood because I was told nothing would be needed. It has been a year since I completed the swap and I have to fix dumb little things because I removed all the wires. As far as connecting your wires for your gauges, 3 will be thru the factory C100 on the driver's side. On the driver's c100 on have the temp wire which is dark green. The alternator wire is brown. And the oil pressure wire is tan.Behind the glove box there is the large black and blue connector. This has your TAC and SES. Also there is a white connector that plugged into to DRAC. The last two wires on one side of this connector are a blue wire with a black stripe and a red wire with a black stripe. Pull the two wires from the connector and wire them together to your VSS wire from the LS PCM. I removed the DRAC and threw it in the trash because I was told I did not need it, and all my gauges work except my temp. My gauge reads 260 after the truck warms up but my live data from the OBD2 says around 170, I noticed on the factory wiring diagram that the supply signal is supposed to be 5 volts and I may have more or a faulty sending unit. I used a meter and checked all the wires from my pin out behind the instrument cluster and to the connector behind the glove box and labeled my wires. I left the pigtail that runs towards the instruments together, but I cut the wires on the mating side so I could pull the pins and solder the new wires and plug them in into the harness as if factory. I have the diagram at my house and will post it for you when I get off work, I had it in previous post for my build, but photobucket got messed up and the photo is not available.
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