1990 Pontiac Grand Prix No Hi-beam problem

Dec 31, 2004 1 Replies

The hi-beams on my son's car have quit working and I am puzzled.



With the ignition switch on and the headlights on, the hi-beams will not come on. However, with the ignition off and headlights off, you can pull on the switch and the hi-beams will come on.



You used to hear a click when you pulled the hi-low beam switch and you no longer hear the click. At first I thought that there was a latching type relay between the switch and the bulbs, but the only wiring diagram I have, in a Haynes manual, shows that the headlights are powered directly from the hi-low beam switch.



I don't understand. If the hi-beam switch itself is bad, why will the hi-beams come on when you pull the switch with the ignition is off?



What am I missing?



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