What is this ?
Thread Starter
Racer
Joined: May 2005
Posts: 324
Likes: 1
From: Homestead Florida
What is this ?
When installing the swps sensor I found this black plug not installed to nothing.There is a long black cable that comes from the ignition key that is not connected.And these two skinny wires connected together.What's going on here ?
Thread Starter
Racer
Joined: May 2005
Posts: 324
Likes: 1
From: Homestead Florida
I'll take a guess that a previous owner bypassed the VATS system. 
The wires from the ignition cylinder provide an electrical path back to the BCM so that when the key pellet is read by the sensing wire in the cylinder the resistance value of the pellet can be read by the BCM.
Wiring a fixed value resistor, that matched the value of the original key pellet, to the proper connectors of the BCM ( or to the connectors contacts in the other half of the disconnected connector) fools the BCM into thinking that the proper key was used to start the car.
The wires from the ignition cylinder provide an electrical path back to the BCM so that when the key pellet is read by the sensing wire in the cylinder the resistance value of the pellet can be read by the BCM.
Wiring a fixed value resistor, that matched the value of the original key pellet, to the proper connectors of the BCM ( or to the connectors contacts in the other half of the disconnected connector) fools the BCM into thinking that the proper key was used to start the car.
