Where is the Tach wire ?

[brianmcb]

The bottom left wire? Are you talking about the plug under the brake booster or the one on the passenger side of vehicle? (I thought that was HVAC stuff?) My plug under the booster has 2 white wires. I think one is for back up lights. The other wire doesn't work for me. Did you have to add a resister?

On my truck it was on the passenger side plug with all the wires that went to the ecm behind the glove box. No resistor for me

[Safariwagon]

Wow! didn't realize it would be on that side (passenger) I will try that. Thanks!