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Old 05-19-2014, 07:30 PM
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Help me find some HID headlights

Guys
I would like to change the headlights in my 1938 Ford pickup. Currently the entire electrical system is converted to 12volts. But the headlights still suck!
I daily drive this truck so seeing at night is important to me.

Rather than going with a bright bulb I want to change everything to a HID system. I'm a little scared because it seems like i have to use "universal" kits and parts to make this work.

What are your experiences with HID lighting for our old cars? What kits have you used and how did they work out?

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Old 05-19-2014, 11:27 PM
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This looks interesting:
Dapper Lighting 7 Inch Classic Projector Kit | Dapper Lighting
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Old 05-20-2014, 02:38 AM
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If you converted to 12 volts and I assume you used a 7" halogen headlight the reason for them being dim is common,here is the fix. H4 Headlight Relay Wiring Harness 2 Head Lamp Systems Fix Dim Lights 7" Round 5 | eBay
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Old 05-20-2014, 02:41 AM
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This should explain why I recommend these: Tips Click on the top option "A Current Topic" it will explain why brighter bulbs can be a problem rather than a fix without relays.
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Old 05-20-2014, 06:07 AM
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Before you do anything, check for voltage drop in the headlight circuit. It is an easy test.
With the headlights on high beam, put positive voltmeter probe on the positive battery post, not the clamp, the post. Put the negative voltmeter probe on the high beam terminal of the headlight. The voltage should be less than .500 volts, ideally less than .200 volts.
Do the same on the ground side of the headlihgts. Negative voltmeter probe on negative battery terminal, positive voltmeter probe on ground terminal of headlights. Again, the voltage should be less than .500 volts, ideally less than .200 volts.

More details on voltage drop testing here.
Voltage Drop Testing

There are a lot of headlight relay harnesses out there. Most are being made by somebody trying to make money, and they still do not use large enough wire to adequately supply current to your headlights. They are easy to make. Get this relay from summit racing.


This is a relay box I got at a junkyard from a Ford Aerostar, and mounted two of the summit relays, and two fuses in.


This is the wiring circuit I used on a 1974 Ford pickup.
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Old 05-21-2014, 10:31 AM
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Thanks guys. I will look into this over the weekend.
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Old 05-21-2014, 12:41 PM
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Hella makes a good halogen 7" diameter headlight. Part # 70477.
Relays can help if you have a voltage problem.
HID means high intensity discharge. I think they are not worth the cost.
Don't confuse HID with halogen lamps. Totally different animal.

vicrod
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Old 10-28-2014, 06:38 AM
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So.... what did you end up doing ?
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Old 10-29-2014, 10:33 AM
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Quote:
Originally Posted by matts37chev View Post
So.... what did you end up doing ?
Nothing yet but it's getting annoying again. My truck is on a Chevy S10 chassis running the original powertrain so I am little doubtful that the relay trick is going to help me, but i do want to try it first. I'd rather lead the clean look of the OE headlights if the lighting is sufficient.

I might try and fiddle with things this weekend.
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Old 11-18-2014, 05:14 PM
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Thanks for the info, oh one question if i may, the headlights right and left go into the cab, do the both run to headlight switch? 1928 ford a roadster
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Old 11-19-2014, 10:31 AM
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My old Austin was 6 volt, and had headlamp bulbs. I went to the wrecking yard and cut the sockets out of a modern car with HID lamps. I cut enough material to get a couple inches around the socket also. I used a holesaw to cut the sockets out of my old reflector, and then with a pair of tin snips I cut down the new donors, until they fit well. Then I used JB Weld on the donors, and pop riveted them to my reflectors to seal and secure them.
I put these together about 4 years ago, and they have worked flawlessly, and give my car great headlights, but with the original housings. Cost me a couple dollars each to convert also, so very easy on the budget. I'm still using the original Lucas headlamp switch, and surprisingly it's also working great!
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Old 11-19-2014, 02:28 PM
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If that's what you did, they are not HID. to use HID, you need the matching ballasts. Most cars use halogen bulbs, most likely what you have used.
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Old 11-19-2014, 02:42 PM
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Quote:
Originally Posted by AJL Electronics View Post
If that's what you did, they are not HID. to use HID, you need the matching ballasts. Most cars use halogen bulbs, most likely what you have used.
Yes, sorry. Mine are halogen. Not sure I'd want anything brighter, as they work great.
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