Halogen Sealed Beams

Our member slantisxdan is the lighting expert. He could state the differences between different bulb types, output, and power consumption/draw. Will this increased draw damage the headlight switch or wiring? That goes to todays condition of those components. All switches are destine to fail eventually, and that includes relays. Newer OEM builds did get halogen bulbs with the same grade of switch and wiring your car has, without the relays. Higher amp charging systems in those too.
I put halogen bulbs in our first 67 B'cuda back in the mid 80s. It was a couple years later when I was driving along and the headlights went off. Quick as I could say WTF, they came back on. Eighth of a mile later it happened again. This was the thermal protection built into the switch doing what it does. New switch cured it. Never had a another problem. So were the halogen bulbs responsible for my switch failure? I can't know. I know it was a 15 year old 90K mile vehicle.
Soooo, install relays if you want. More power to the bulbs does equal brighter. Signaling those relays would likely never over heat and activate that aforementioned thermal protection, due to much less current travelling the headlight switch, dimmer switch, etc... Those OEM switches would still fail eventually. You'll loose park lamps, dash lamps, high beam, low beam, something. Bet on it.