It is a 4 cylinder 5 speed. The backup switch works. When I put it in reverse, the fuse blows. It used to work. Then I replaced a bulb that was blown. I noticed the bulb I took out was not the correct bulb. I am wondering if the bulbs I have (which are the correct ones according to the numbers and Haynes book)are sucking to much juice and therefore shorting out the circuit. I followed the wires from the trans to the fuse box. No breaks or areas where there might be chaffing from what I can tell. Also I traced wires from fuse box to the rear where it stops at a plug. I was told the plug might be bad. I said I dont understand because it worked before AND there are no breaks, tears, chaffed marks, or burn marks in the bulb socket, or in the plug. I also used 30 amp fuse when only 25 is required. Still blows. Thank you in advance.