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Old 12-09-2013, 08:19 PM   #3
Ole Greenie
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Join Date: Apr 2010
Location: Hagerstown, MD
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Re: 1969 GMC headlight conversion and wiring questions.

Quote:
Originally Posted by desert-rat View Post
Are the headlights 5 3/4" or 7"??
I don't have the truck with me right now, but I'm looking to buy a pair of low beams conversion where all I have to replace is just the bulb and not the whole unit.
Also, can I use the stock wiring or will I need to buy an adapter to work with the new headlights??
I made calls to after market places, but can't get a straight answer.
Thanks.
We have 7" headlights. IMO, this is a real easy upgrade. Go down to the local pick-a-part and pull off 2 5-prong square relays. Do a search for the upgrade wire diagrams and install it all your self with good 14/16 gage wire from Autozone... You will save a ton. The headlights can be had on Ebay for less than $45. Total in mine was $60, and bright as heck!
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