If you are using the original 6 volt wires, those should be heavy enough for the HID.

I converted my '38 to HID and they are very bright. I like them.

Wayne
1938 1-Ton Farm Truck
Stovebolt Gallery Forums
1989 Silverado
1996 Mustang GT convertible
When I die, I hope she doesn't sell everything for what I told her I paid for it!