I am having the same problem but I have no tail lights. I have checked fuse #18, the connectors and installed a new switch. when I run a jumper from the light switch to the dimmer the cluster lights up. where do I go from here?

 

I am having the same problem and I don't have tail lights. my brake lights and radio all work jus fine. I have check the fuse, connectors, and installed a new light switch. when I run a jumper from the light switch to the dimmer my cluster and all other lights work. where do I go from here?

 

Common problem, - the harness in the back of bed corrodes. Have to pull it down, find the problem.

 

would that be why my dash isn't lighting up as well ?

 

Nope.