I have tried posting this message 3 times. The administrator says he does not know why it will not post. He said to resend it. I am retyping everything to see if I included some unsupported characters...
When you try and use the Jake does 2nd show up in the tranny shift pad? If not the switch may not be working... check with a ohm meter and if defective replace with a on/off switch with the same number of contacts. If 2nd shows up then it could be the two wires that connect to the head on your engine... not likely.i
There is a fuse in the front run box labeled Jake Brake... check it before the switch.