I put in the jumper with a toggle switch and it worked fine. I jumped between the upper left and lower right if I remember correctly. One of the tops only has power with the key on(use that one) and the other one on the bottom is a ground(obviously you cant use that one). This also works as a theft deterrent. Cured the hot relay issue and the check engine light from going out ( sparatically )and the truck dying or not starting.