I finally got around to putting new headlights in the 70 Mach 1. I bought semi sealed lights with Narva Halogen 60/55W globes from Repco. Narva claim a 30% increase in brightness but I'm not sure about that. I left the old one on the (US) driver's side for comparison. They are certainly a lot better than the ones that were on it so I'm happy with the result. In the pics, the RHS light reflection is the new one, LHS as you face the car.
You can see with the new one that the reflector positions the light downwards and spreads it sideways a lot better then the old one. You can also see the obvious cutoff at the top of the beam to stop light flooding onto on coming traffic.
"The simple answer is, even if I have decided I still don't know what to do."
Are the headlights on relays in a 70?
You want to be running relays with H4 globes, else you might find your headlight switch will start overheating and turning lights off...
Good point Birchy. I have read up on the upgrade and relays etc, was all prepared tp do it but with these globes, Narva claim it's not necessary. From the packaging: "Plus 30 technology...operates with no increase in power consumption or heat, so there is no need to upgrade wiring or potential to damage the headlamp".
I'd be interested in thoughts on this. I might also email Narva Australia & see what they say.
Thanks for all the tips, here's the response from Narva. Looks like I'll go ahead with the relay regardless.
Hi Rick. Relays are not critical and these globes will work without one, but a relay is recommended. Many early cars did not have them when they really should have. A relay will put a little more power to the globes and take the load off the headlight switch.
A much better light spread on the new ones, definately shows it on the wall, too.
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