X2 on the ground lead, follow the all black wire and find where it bolts to chassis. Ditto for the one at the end of the battery cable, down by the lower part of the radiator, clean up that frame connection also. Half of the circuit is the metal frame of the truck and all those conections. BTW the stock alternator is good for 100 amp, but my stock D1 draws 85 amps with everything on. So at some point lighting upgrades hit the performance edge of the alternator.

 

i just got new bulbs and they scream out there. no to bright no one flashes me to often with my lows on. but ill blind someone with my highs. but no need to replace the hole unit. not worth it.