speedo and tcc question

[dickwiley]

I have a 94 c1500 with a 5.3l/80e. Question is what 2 wires are for speedo and tcc, colors, general location would be great. How i had them wired was in the wires behind glove box but they werent the ones i thought they where the wires i had hooked up where purple and dark blue. Im wondering if speedo is dark green/white and tcc orange. These 2 wires are driving me nuts. Other info, im not using truck(tbi) pcm only the 5.3 pcm. Harness is standalone, everything else works i drive the truck still just use my torque app for gauges.

[dickwiley]

Also since the 80e has 2 vss i used the vss from the truck and added the second vss and followed speartechs instructions on the kit

[dickwiley]

Anyone

[kewljay223]

check the stickies and grab wiring diagrams. tons of info on here that explains it. tac needs resistor and pcm needs to be tuned for correct signal along with segment swap for 80e

[dickwiley]

My speedo i figured out and reads correctly. Tcc not tac. I have the tac hooked up.i cant figure out the TCC wire. I have read the stickies and i have schematics but its still not working.