I have got a early 04 and just wired up the lock up switch on my transmission. I got a 2 wire toggle switch. Pulled the wrong plug on the driver side transmission and located wire #7. I tapped into wire 7 and ran a wire to one side of the toggle and then the other wire coming off the toggle I soldered a 33ohm resistor in and grounded it. I put my truck in drive and flip the switch and it will stall the motor.. But I tried it out going down the road and flipped it soon as I hit 2nd gear and the shifts feel the same and so does the motor power.. I also flipped the switch on doing about 50mph and floored it and it downshifted.. Thought it was not suppose to downshift. Is it not working correctly?