Headlight upgrade
Hello all,
I have found this site a wealth of knowledge over the past few years. I wanted to thank everyone for that. My predicament now is headlights. I have two with bulbs that need to be replaced so I decided now is a good time to upgrade. I would like to upgrade my original 1969 GMC C30 headlights to LED. They are the 4 5.75 bulbs. I have no idea where to start or the best bulbs for the job. Any and all information would be welcome! |
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So do you currently have the factory seal beams or have they already been converted to halogen?
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The Nokya sealed beam conversion kit and LASFIT 9005 HB3 9006 HB4 bulbs seems the way to go. The lights are $90 a pair on Amazon and the bulbs are $63 for all 4.
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All sealed beam..still original.
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100% correct
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I don't have a preference yet...looking for ideas. Would like plug and play but wouldn't be opposed upgrade of the whip as well
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Before you do the lights do the relay upgrade this will insure you get the most out of your lights to begin with. A lot of people stop at this mod after seeing how bright they are.
I have been looking at a set for my 64 SS Impala as well but haven't found what I want yet.:chevy: |
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Please don't buy the "new" ultra bright ones ! Don 't know what kind they are but they are blinding for the oncoming traffic. I drive a tractor trailer rig at night and my colleagues and I all agree they should be illegal ! The shade of white is just very uncomfortable to the eye. I wouldn't want to be on a country road with those lights coming at me ! They absolutely blind you !
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As I have never had a gmc. Do both bulbs act as hi/low or dose it just switch from inner to outer or vice versa?
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So on high beams, all four lamps are lit. |
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A slight diversion in the topic, but maybe it will help the OP. Does anyone have a before/after pic of the difference in headlight brightness with a relay kit? I suspect that a relay kit would also serve to brighten the tail and marker lights, since their voltage supply would be higher if the headlights were fed through a circuit directly from the battery, instead of all the power going through the headlight switch. I could just drop the $30 for the relay kit, but I would rather spend $30 worth of time on diagnosis, because I was so poor as a kid that the only thing I could pay was attention. ;)
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I bought a set of the LMC bulbs like up above. I also bought their relay wiring harness in hopes of making them brighter. The wiring harness didn't last 2 months. Relays immediately gave up.
I already had some HID lamps installed, not the old style bulbs. Once I get the other issues worked out on the pickup I intend to install the new LMC bulbs and try to get the harness working again. |
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This is why I made my own harness and it works great. I've done my 71,67, 64 Impala and my 56 Bel Air + a few friends vehicles.:chevy: |
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Thanks, Jeff |
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There is a huge difference in cheap relays vs Bosch-Tyco relays. The longevity of the Bosch is amazing. I ordered some cheap relays for my cooling fan and air ride management, but the relays failed within a month. I paid extra for the Bosch brand and a year later, still going good. The relays in my Ford Expedition are all Bosch and I have never replaced one...bought new in 2000 and has 180,000 miles. That says something.
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I just bought a pair of 7 in halogens from rockauto for 8.00 each
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stock h/l switches are very robust so with incandessant or halogen bulbs they last for decades with no problems. I,ve had my 71 since new and replaced 1 switch
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I did the madelectrical.com upgrade
I got some water tight relays off of some 80's cars at pick npull. The headlight power now turns on the relay and I got twice as bright lights now. I'm running Silver Star halogen. http://www.madelectrical.com/electri...adlights.shtml |
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I've always sworn by these from the Bus Depothttp://www.busdepot.com/nl910ch4 with 55/100W halogen bulbs and relays for hi/lo. These are basically Indian made copies of the 70's Cibie Z beams with the same or similar beam pattern(E code). They also seem to be quite durable. I've used them on several vehicles with 7" rounds because it's hard to beat that price. That's what's going in my new 67.
Cheers Griff |
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He passed away a few years ago.
His wife was kind enough to leave the site up |
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