[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.

[Formulajones]

I simply use the conversion housings sold all over on Amazon for about $20 a piece that accept the H4 LED replacement bulbs.

For LED's I prefer the Lightening Dark LED's also sold on Amazon for about $50 a pair. After using several they are the only one's I've come across that project a very nice beam.

So for about $100 you can have very bright LED headlights that work fantastic.

I've converted the Chevelle, the Firebird, the Camaro, my sons Mustang, dad's GTO, and will likely do the Nomad and the Vega at some point. No modifications necessary on any of these cars.

[Greg Reid]

Originally Posted by Formulajones

I simply use the conversion housings sold all over on Amazon for about $20 a piece that accept the H4 LED replacement bulbs.

For LED's I prefer the Lightening Dark LED's also sold on Amazon for about $50 a pair. After using several they are the only one's I've come across that project a very nice beam.

So for about $100 you can have very bright LED headlights that work fantastic.

I've converted the Chevelle, the Firebird, the Camaro, my sons Mustang, dad's GTO, and will likely do the Nomad and the Vega at some point. No modifications necessary on any of these cars.

Trying to clarify something for myself here. There's no need to change the factory T-3 plugs?
Also, did you use the same recommended LEDs for your dad's four lamp setup? Are there separate high beam and low beam lamps or do you use the same lamp for all four?

[Formulajones]

Originally Posted by Greg Reid

Trying to clarify something for myself here. There's no need to change the factory T-3 plugs?
Also, did you use the same recommended LEDs for your dad's four lamp setup? Are there separate high beam and low beam lamps or do you use the same lamp for all four?

No need to modify the plugs on the cars, the H4's come with a male plug already wired in. Yes used the same LED's for the 4 lamp setup. They just tell you on the high beam lamps the 3rd prong isn't used. It's literally just a plug and play swap, no different really than changing out a burnt incandescent bulb. Once you figure out how the H4 bulb is inserted and clocked you're home free.