[MrE]

You're not alone, that has been a topic of several threads on this forum. The best bang for your buck, and necessary for any other improvements is to buy a couple of relays. The relays should be mounted as close as practical to the headlights. You will want to come off your power panel up front with as heavy a gauge wire as are running to your headlight switch, and a short a run as possible to your new relays. Wire it up to use the current headlight wires to activate the relays. This will eliminate all the juice from running through your headlight switch and get you more voltage to your headlights.