[Lemans64]

Before changing lights you should try putting n a really kit, it puts direct 12 volts to light instead of about 10.5 after going thru switch etc.
I just have cheapy non halogen lamps and the relay made a lot of difference. Either build your really kit yourself or by a kit either on eBay or Amazon.
Ebay 234907695011 or Amazon. Painless wiring kit https://www.painlessperformance.com/wc/30814..

I used the headlamp dimmer switch output to headlamps to trigger the relays, and made my own wiring harness using new headlamp pigtails
from any part store, bought some packard wire terminals, and wired it in. amazing difference.