Blinking headlights

[Cheaper Jeeper]

After the headlights on my truck have been on for about a half hour they start cycling off-on-off-on-off about once every second or two. I've seen references to other people encountering this problem, and IIRC the solution was replacing the switch.

What I can't remember for sure was whether it is the dash-mounted (on/off) power switch or the floor-mounted (hi/low) dimmer switch.

 

[smokin69]

In my 86 they did that and my dash switch was fried.

 

[f-two-fiddy]

Fix it now. Or take the risk of fire

 

[Agnem]

It's the dash switch. Replace it, and then do a relay mod on both the headlights and clearance lights, and you'll never need to replace it again.