I traced the wires back from the plug on selinoid located on back of the injection pump. The plug has two wires, a brown with blue stripe, and a red with blue stripe. They go into the wiring harness that runs over to behind the battery. I can't see where they come out of the wiring harness or what they go to. Behind the battery area there is two computers, and kickdown relay, also a curcuit breaker? I don't see anything with a knob to adjust any where.