Greetings! I'm joining forces with what appears to be the best tahoe/yukon forum. With our powers combined we can make captain plan...... Anyway I'm interested in finding out how to fix a mysterious Headlight issue. The high beams turn off and the low beams come on as if the switch was used but WITHOUT using the turn signal switch! The blue high beam indicator turns off. Then it comes back on after 5 seconds or so. I have found fuse/relay diagrams for the box under the hood and the box in the door jam but I have not found one for the components located under the steering wheel. (I'm thinking there should be a relay for the lights that is turning the high beams off and low beams on. As if the high beams overloaded the relay.) This is on a 1999 Tahoe 260k miles running strong. Rough gravel road use, I've patched and secured various wires already. Is there a common rub through point for the high beams?