hey guys, just bought a 75 pickup, and i am running into some issues regarding the turn signals. here it goes, turn signals work with lights off all thetime. at first the turn signals would not work at all when headlights were on, (went through every ground i could get my hands on and cleaned them), also took every switch out, cleaned and checked for any shorts;none. then turn signals worked with headlights on, but only when car was off without key in, (gave a fairly loud clicking compared to when only turn signals are on). and i just discovered when the tail meter fuse is out, front headlights work and turn signals work in every key position(including off). but when fuse is reinstalled, function returns back to only when car is off; headlights and turns work. Does anyone have any clue as to what is going on?