have no illumination by 1 week in my 99 2500 cluster....its completely dark and the only lights on are the 2 turn signal arrows that are constantly on...! even the OD OFF warning light not function..all function properly, instruments are ok, its only the illumination.. im not very familiar w electronics so where can I start? anyone w a similar problem...

thanks

 

took off the cluster and cleaned the two harness on the back w contact cleaner but they looks very good...w the cluster in position sometimes it illuminate and sometimes not; if I move it a bit it illuminate and function good for a while...maybe its a contact problem on its back...pins and harness looks perfect.. I've noticed, w the engine off, that when I turn on the lights, and cluster not illuminate(both LH and RH turn signal lights on and flashing intermittently) I hear a bad noise from thre engine bay...like a relay that engage and disengaged continuosly, its the fuel system relay under the fuse box in the engine bay; and even the "valves"wires/connection bolted to the inner LF fender, under the left battery, I think its the stuff for the heater grid(cables goes onto it)...but I dont know what that concern w cluster illumination...

I need help, thanks
rob