1990 dash lighting problem - ZR-1 Net Registry Forums

Volleyman · 05-20-2009

On my 1990 ZR-1 the backlighting behind the speedo/fuel gauge LCD's works fine (brightness adjusts with control)with the lights on, but it is completely dark with the parking/head lights off. When turning the ignition switch on it briefly lights to full brightness but then goes completely dark. This is in full sunshine outside. The photocell in the dash seems to be good as it changes value with the amount of light hitting it as tested with a VOM. Another post stated there was a power transistor mounted on a bracket under the dash but I have been unable to locate it. Any ideas??

05-20-2009	#1
Volleyman Join Date: May 2009 Location: MN Posts: 5	1990 dash lighting problem On my 1990 ZR-1 the backlighting behind the speedo/fuel gauge LCD's works fine (brightness adjusts with control)with the lights on, but it is completely dark with the parking/head lights off. When turning the ignition switch on it briefly lights to full brightness but then goes completely dark. This is in full sunshine outside. The photocell in the dash seems to be good as it changes value with the amount of light hitting it as tested with a VOM. Another post stated there was a power transistor mounted on a bracket under the dash but I have been unable to locate it. Any ideas??