I agree on the relays. Before installing relays on my 93 ram, the headlights were dangerously dim. I measured 9 volts at the headlight, with the engine running. After installing relays, it had full alternator voltage to the bulbs, about 13.8V. That plus a pair of $5 Wagner H6054 halogen sealed beams, and it has incredibly bright lights! One caveat: at 9 volts, the sealed beams would last just about forever. Not so when you zap them with 13-14 volts. It seems that I only get about 2 years out of a bulb. But for 5 bucks, who cares?