Walter Buller
Member
We have completed the installation of the "93 Cummins 12v motor and "98 NV4500 trans. into the "94 Chevy dually. Everything is working great except the lights. When the headlights are on the turn signals don't work. They work fine with the headlights off. Also, even though we installed auxillary temp, oil pressure and alternator gauges, the original alternator and temp. gauges in the dash continue to work, but they stop working when the headlights are on. Same thing with the fuel gauge. We ran a separate wire from the headlights to a new switch we mounted on the dash to isolate the headlights from the rest of the wiring but it made no difference. Of course we can't get a safety inspection sticker until at least the lights are working properly. I would sure appreciate some feedback from any of you that might know what the heck the problem is or at least how to get around it.
