working on 1997 ram 1500 4x4 problem is the heater controls dont have any lights but all other dash lights work. I removed the heater control switch and inspected the bulbs (all four) they look ok which makes me suspect wiring. any one with schematics or links to schematics would be most appreciated
thanks

 

While looking for a diagram, you can test the bulbs & wiring. Never consider a fuse or bulb good until it tests good with a meter or by lighting.

 

Is this transplant? or did you typo the 1500?