I just swapped a np241 tcase into my truck. I can't figure out how to get the vss to work. I tried splicing the wires together each way and nothing. The colorado has a purple( signal low) and yellow (signal high). The 241 has a purple (input 1) and green (input 2). I put each together and with it in drive without a driveshaft nothing. The output was spinning my my speedometer did nothing. I'm horrible at wiring and not sure how to proceed.