check your#5 15 amp fuse,if that is good check if there is power at the fuse,because sometimes the source of the problem can be a power distributon problem,like maybe a other fuse or fuse link,if you have power at the fuse,you need to check your bulb's in the back,and if the bulb's are good,check the ground there is two of them one on each side,make sure there both good,if all that is good you need to go to your back up switch that screws INTO your 5 speed trany,locate the harness,the wire that your looking for is (pink/orange)is the wire that comes from the fuse(if you have power there) and black pink(is the wire that goes to the tail light's) when you find the plug diconnect it and override the two wires in the plug,if your light's go on,unscrew your back up light switch and reconnect it to your two wire plug,BY PRESSING ON THE SWITCH IF YOUR LIGHT GO ON THEN YOU MIGHT HAVE A PROBLEM INSIDE YOUR TRANY,IF YOUR LIGHT'S DO NOT GO ON YOU JUST NEED A SWITCH,GOOD LUCK NICK
need help back up lights quit working 
