help! lights pulsate and wipers speed up

Alright so I took some sand paper to the washers, and the surface of the voltage regulator that contacts the little threaded inserts on the inner fender and sanded those a little as well. Then I took some sand paper to the washer, the surface of the head, and both sides of the ground strap and it seemed to make it better. I think it's still far from fixed but that was definitely an improvement. Thanks guys!