I have a 1994 G20 Mark III conversion van and the dome lights don't work. What fuse in the fuse block under the dash feeds the dome lights? Anyone have a diagram or picture of the fuseblock? Yes I have checked the conversion van fuseblock behind the driver's seat, no blown fuses there.

 

Try this. https://charm.li/Chevrolet/1994/G%20...pwell%20Lamps/

 

Thanks I found the problem. Broken negative wire going to the smart block behind the driver's seat.