Is there a specific ground or power wire I'm missing? According to a scanner, none of the engine sensors (O2s, MAF, MAP, IAC) work. I'm ready to push this truck off a cliff. I watched the MAF and thought it was working, friend with the scanner says it isn't, it shows a frequency but not when the truck is in the run position but not started yet. O2s read about 60-80 rather than varying from 100-800. IAC in HP tuners always says "IAC not ready"