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[C2] Worth while? forward headlight harness

Old 12-04-2018, 10:25 AM
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Default Worth while? forward headlight harness

As most know, I've rebuilt my headlight motors (easy job, thanks Larry!) but the headlights still turn kinda slow..... Someone suggested replacing the front side headlight wire harness (cost 175 bucks from Zip..) makes a big difference.. Acknowledging the sellers are promoting 25 y/o wire doesn't work so well, yada ya ya.... Has anyone actually replaced the front harness and did it make a material difference in headlight motor speed and overall brightness of lights? So, is the juice worth the squeeze?

https://www.zip-corvette.com/64-65-h...l-forward.html
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Old 12-04-2018, 11:25 AM
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The only thing I do is make sure head light felts are lubed with with light oil
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Old 12-04-2018, 11:45 AM
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Think of all the wires and connections that would have to be bad for all those things to be weak. it's far more likely that you have a corroded or loose ground on the radiator support. It's also likely that the old motors and the old headlights just don't work like newer cars you're used to.
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Old 12-04-2018, 11:53 AM
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Andy, not quite the same issue, but my new headlight switch was not up to the task, so for less than $50 and about an hours work I made a new relay controlled harness to control the headlights only (not the motors) that plugged right in. The headlights are brighter with no flickering or shutting off.

https://www.corvetteforum.com/forums...ght-issue.html
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Old 12-04-2018, 12:14 PM
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If your headlamp motors are rebuilt and now rotating around at pretty close to the same speed then I doubt a new headlight harness will make much different - those boxes are geared pretty low and they will only rotate so fast. But checking grounds would definitely be a worthwhile endeavor. If one is still slower than the other then maybe a pivot is dry/partly frozen or there's a bad power lead/ground issue on one side. Did you also rebuild and lube the pivots?
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Old 12-04-2018, 02:14 PM
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Yes, rebuilt both motors, including all mechanical hardware. On clearly moves slower than the other....about 1/2 the speed....
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Old 12-04-2018, 09:11 PM
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On my 63, it is possible to switch the wiring harness connections at the motors so the left wire runs the right motor and vice versa. Just unplug both and swap where they plug in. This test will tell you whether the slow side is due to the motor or the wiring.

If you discover the slow side is due to the motor, I'll be interested to hear what comes next. I've had my slow motor out twice and all the mechanical stuff works well. I'm wondering if any of the rebuild services actually make the electric motors work better.
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Old 12-04-2018, 09:39 PM
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Great idea Dad....
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Old 12-04-2018, 09:56 PM
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Excellent suggestion!
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Old 12-05-2018, 10:12 AM
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Originally Posted by kellsdad View Post
On my 63, it is possible to switch the wiring harness connections at the motors so the left wire runs the right motor and vice versa. Just unplug both and swap where they plug in. This test will tell you whether the slow side is due to the motor or the wiring.

If you discover the slow side is due to the motor, I'll be interested to hear what comes next. I've had my slow motor out twice and all the mechanical stuff works well. I'm wondering if any of the rebuild services actually make the electric motors work better.
I've rebuilt my motors numerous times and have never been satisfied with the results. I finally sent them out to a rebuild service and they came back like new, both in appearance and mechanically. They even switched out one of the cases so that the dates were accurate. i seriously doubt that the wiring will have any significant effect on how well the motors work.

Last edited by jprop; 12-05-2018 at 01:51 PM.
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Old 12-05-2018, 10:35 AM
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Originally Posted by 1Cerberus4u View Post
Yes, rebuilt both motors, including all mechanical hardware. On clearly moves slower than the other....about 1/2 the speed....
50 years many fixes & and my right side is still slower...so what!...it will still be working when I am long gone...

jack
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Old 12-05-2018, 10:40 AM
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OCD jack, OCD....
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Old 12-05-2018, 10:46 AM
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Originally Posted by 1Cerberus4u View Post
OCD jack, OCD....
I understand....lol....have fun...but I would replace 25 year old wire..

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Old 12-05-2018, 07:56 PM
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Why don't you wire the unit that you are having trouble with across the line, (take the old harness out of the equation) and see what happens, that way you will know if buying a front harness is worth it. There are quite a few other ways to trouble shoot the system, Not going nuts with a VOM I gave up the easy way.
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