i have a 1985 gmc jimmy s15.this has a v6 2.8 litter engine.the faster i drive it the faster the lights flash.when idling normal stops flashing but when i hit the gas it starts flashing.i check every wire i can find and every connection?whats left?

what lights flash??



Have you checked the alternator ?

If you have a DVOM, set it to read AC voltage. Start the engine and put the test leads on the battery terminals. If there’s any AC voltage measured at the battery terminals replace the alternator.