ELETRICAL

CHARGING SYSTEM GOOD,USE TO PULL 8X20 TRAILER EVERDAY START AT 3AM LITES AND EVERY THING GOOD.THANK YOU FOR SUGESTIONS WILLING TO TRY ANYTHING,I KNOW ITS SOMETHING SIMPLE JUST CANT FIGURE IT OUT

You could have a blown fuse - even possibly due to the trailer harness. Check all your fuses under the hood and under the dash. Pick a circuit - like the blower - and trace it. When you find that failure, you may have the key to the others.