Got a 2002 blazer 2wd 4.3 v6. My headlights, dome light, and dash lights lightly flicker, and headlights dim when hitting the brakes. Anyone know where the short is, and/or how to fix it?

That's extremely helpful. I think the problem is the diode, but I did not think about those wires...now I know about it.Thank you! That's extremely helpful. I think the problem is the diode, but I did not think about those wires...now I know about it.Thank you!

Oh! I forgot one problem I may be able to help you with. Warm air, go warm up your vehicle, when up to temperature, feel both the hoses going into the fire wall. Should both be hot. If not, report back, I have a fix for you. Oh! I forgot one problem I may be able to help you with. Warm air, go warm up your vehicle, when up to temperature, feel both the hoses going into the fire wall. Should both be hot. If not, report back, I have a fix for you.

Thanks! That makes sense, there's no problem unless truck is running Thanks! That makes sense, there's no problem unless truck is running

Do you have a voltmeter ? check voltage at battery while vehicle is running . Should be 13.1 to 14.1 Do you have a voltmeter ? check voltage at battery while vehicle is running . Should be 13.1 to 14.1