I love this forum. I read it most every day. I now find I need some help, however. I have a 90 Reatta convertable with no instrument panel lights. Switches, radio controls, shift indicator etc have no backlighting. The ICP and the climate control screens do light properly. I have replaced the headlight switch cluster with a new one because the dimmer slider on the old one did not work. Was hoping that would fix the problem, but it did not. Can anyone give me some suggestions about what to check?