The negative coil wires are Orange. Tap them at the CPU Harness behind the battery. The 8 outermost wires on the harness (4 top 4 bottom) are the factory negative coil wires. the instructions that come with it sucks.

 

Thanks, what color or where are the positive?

 

Tap the positive at the first coil on the passengers side at the front of the engine. There should be two wires coming out of the coil and one shold say test or something of that sort. It should be a red with light green stripe. Thats the positve. its exactly on the same on each coil. The negative switchs colors. the positive doesnt. its a common positive.

 

Dont do this!!!

 

Anyone know of a similar product for the 99 models (5.4l coil-over)? What's different about the '99 5.4l and the 2000-02?