I have a 01 b2500 and my reverse lights do not work i checked the bulbs put new 1s in and i checked the fuse and also put in a new reverse light switch and still no back up lights am i forgetting to check something or am doing something wrong?

 

You might have gotten a bad switch i suppose. It is easy to test with an ohm meter. If you have trailer wiring it could be involved with that. You could also have 2 bad sockets, though unlikely. I assume it is a manual transmission. It is a pretty simple circuit. A test light and ohm meter should sort it out fairly easily.

 

Yea its a manual transmission and i probed the sockets and the connector that goes to the switch and no light turns on my tester but i haven't checked the switch with an ohm meter yet...but there should be power going to the connector that connects to the switch correct

 

Yea,it comes from the underhood fuse box.

 

Ok do you know which fuse or relay it is that powers the connector

 

I would just run the test light over them all. Takes 1 minute tops. Looking up fuse numbers is more time consuming than to just check them all.

 

If the fuse is blown then you might have a bad light socket. You can generally tell how bad a short is by looking closely at a blown fuse. It can have a hairline crack ( slow degradation due to higher amperage over a long period of time) or it can look like a bomb went off in the fuse (dead short) or anywhere in between. Fuses are rated 3 times the normal amperage draw of the circuit. 15 amp fuse services a 5 amp circuit,etc