Last night I pulled the turns signal stalk back to switch to high beams and was plunged into darkness. I cant believe that ALL four of the bulbs lost their high beam filiment at the same time so this appears to be a power supply problem. I did not find a fuse for the headlights...didnt expect to...so where should I look to find this fault??

It's happened to me before..... It was caused by a bad dimmer switch. It's actuated by a rod that runs down the steering column. Remove the panel under the steering wheel and you will see it attached to the column. I found a replacement at my local Autozone.

Jerry