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Old Sep 26, 2015 | 01:27 PM
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Default Flasher problems

After instaling a brand new harness in my 72 Corvette i have a problem.
When i put the lever to flash left the left rear and front right turns on, and the opposit if i turn the lever to the right.
The correct indikator turns on in the panel so rear and the panel is correct.
The wiring harness i "bullet proof" regarding to connect everything and left and right is far apart.
Maybe the guy who fabricated the harness made a misstake?.
I dont think you can connect the outgoing wiring from the fuse box wrong, or can you? feels like a long shot.
That part was already made when i bought the car.


Any ideas?
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Old Sep 26, 2015 | 02:39 PM
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Hi R,
Quite odd!
First thing is we're talking about 3 harnesses here. Dashboard, front lighting, and rear lighting.
You mention replacing a harness… which one?
Regards,
Alan
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Old Sep 26, 2015 | 02:52 PM
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Hi Alan.
I have change all harness exept the rear.
All works fine exept the front which flashes the oposit way against dashbord and rear.
i think a couple of wires i at the wrong place where the front harness connect against the firewall, the guy manufactured the harness probably did something wrong.


Originally Posted by Alan 71
Hi R,
Quite odd!
First thing is we're talking about 3 harnesses here. Dashboard, front lighting, and rear lighting.
You mention replacing a harness… which one?
Regards,
Alan
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Old Sep 26, 2015 | 03:03 PM
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Hi R,
That sounds possible.
I guess there are at least 2 possible remedies.
Try to change the 2 wire connections made at the firewall connector…. or unwrap the front harness back to the point the left turn signal exits the harness. The RIGHT turn signal lead will be too long, cut a piece out of it, splice it and use that lead for the LEFT side light, then splice that extra piece of wire into the RIGHT turn signal lead you just cut, re-wrap the harness, and plug the lengthened lead into the RIGHT side light.
Is this TOO bubba?
Regards,
Alan

Last edited by Alan 71; Sep 26, 2015 at 04:34 PM.
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Old Sep 26, 2015 | 03:20 PM
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Ok i check what is best, regards Robert
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Old Sep 27, 2015 | 10:49 AM
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Originally Posted by Robban f
After instaling a brand new harness in my 72 Corvette i have a problem.
When i put the lever to flash left the left rear and front right turns on, and the opposit if i turn the lever to the right.
The correct indikator turns on in the panel so rear and the panel is correct.
The wiring harness i "bullet proof" regarding to connect everything and left and right is far apart.
Maybe the guy who fabricated the harness made a misstake?.
I dont think you can connect the outgoing wiring from the fuse box wrong, or can you? feels like a long shot.
That part was already made when i bought the car.


Any ideas?
Does the light blink up front or just stay on?

Willcox
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Old Sep 27, 2015 | 11:17 AM
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Are the wires in the harmonica connection matched up correctly?
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Old Sep 27, 2015 | 11:33 AM
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Hi everthing works as it should exept in front wich flashes The oposit.
I Will check the colour and see, but i think they wired it wrong in the harness.

Originally Posted by Willcox Corvette
Does the light blink up front or just stay on?

Willcox
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Old Sep 28, 2015 | 03:34 AM
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Either the two front parking lens lamp wires got routed to the wrong lamp, or the wires to those lamps were switched at the other end.

And, it's also possible that the harness was wired incorrectly, too. The easiest fix might be to find the nearest part of the harness where those two wires run together, then cut, switch, and resplice the wires so that it works properly. If you do a nice repair job and re-wrap the harness, it would hardly be noticible.

Last edited by 7T1vette; Sep 28, 2015 at 03:36 AM.
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Old Sep 28, 2015 | 04:36 AM
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Yes i probably do that, i have everything to do a nice jobb,
just anoying that it´s new and wrong








Originally Posted by 7T1vette
Either the two front parking lens lamp wires got routed to the wrong lamp, or the wires to those lamps were switched at the other end.

And, it's also possible that the harness was wired incorrectly, too. The easiest fix might be to find the nearest part of the harness where those two wires run together, then cut, switch, and resplice the wires so that it works properly. If you do a nice repair job and re-wrap the harness, it would hardly be noticible.
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Old Sep 28, 2015 | 11:21 AM
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Check the colors of the wires going to the front lights. Light blue is left and dark blue is right. If the colors are correct then swap the wires at the firewall plug. Once you get to the plug the terminals are fairly easy to push out and move to the different cavities. This is the proper fix vs cutting and swapping wires which is a complete hack job on a new harness.

If the colors are wrong then you could still swap the wires at the firewall plug. Otherwise, shorten the dark blue wire and take it to the right side and lengthen the light blue to the left side so it's fixed correctly.

Having the wires change color in the middle of the harness is a crappy fix that creates troubleshooting issues later when someone is trying to figure out why the lights don't work next time there is an issue.

Last edited by lionelhutz; Sep 28, 2015 at 11:24 AM.
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Old Sep 28, 2015 | 11:33 AM
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You could just un-pin the terminals..... I have a tool for this but you can use a small blade tiny screw driver and enter the forward side of the terminal forcing the tang to release. Then just switch the two wires out.

I know it's a pain but if it were me I'd start at the turn signal connector and check the wires there first, then if they are okay I'd move to the fire wall connection and remove the bolt there pull the forward lamp harness back and test it there. (that might be the easiest place to swap too).

Willcox
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Old Sep 28, 2015 | 11:39 AM
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They can't be swapped at the turn signal connector or the dash lights would also be backwards.
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Old Sep 28, 2015 | 01:35 PM
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It will probably be a nightmare to remove the conection at the firewall.
It looks like its some kind of Brown glue all over it.
Talked with the previous owner and he said that this glue was in the kit at instalation.
Plus it was years ago it was mounted so the glue is very sticky!
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Old Sep 28, 2015 | 02:30 PM
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Originally Posted by lionelhutz
They can't be swapped at the turn signal connector or the dash lights would also be backwards.
100 percent correct! So don't go there first, I missed that on the schematic. It probably is at the firewall.

Go to the parking lamp and see what color the wire is.
Dark blue is the passenger side with Black and brown as the other two.
Light blue is the driver side with black and brown as the other two.

If these are correct then I would pull the main connector loose and see if the wires are reversed. You'll just have to work around the goo... but its do-able.
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Old Sep 28, 2015 | 07:08 PM
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It should be a grease and if you just replaced the harnesses it should come apart without any difficulty. Working through the grease will be a bit messy but that's about it.
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Old Sep 29, 2015 | 02:30 PM
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Right side is dark blue and left is light blue so the colours are correct, so its in the connection the fault is probably
So you just cant switch dark blue and light blue at the lights, shouldnt that work?
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Old Sep 29, 2015 | 03:09 PM
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Originally Posted by Robban f
Right side is dark blue and left is light blue so the colours are correct, so its in the connection the fault is probably
So you just cant switch dark blue and light blue at the lights, shouldnt that work?
Possibly.. but I don't think the wires are long enough to reach. I'd just pop the firewall connection loose and swap it there (and that's probably where its switched at).

Willcox
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Old Sep 29, 2015 | 08:46 PM
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Originally Posted by lionelhutz
They can't be swapped at the turn signal connector or the dash lights would also be backwards.
Thanks for the correction, enlightening me and posting the correct remedy.
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Old Oct 1, 2015 | 03:55 AM
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Originally Posted by Willcox Corvette
Possibly.. but I don't think the wires are long enough to reach. I'd just pop the firewall connection loose and swap it there (and that's probably where its switched at).

Willcox

Ok i was thinking about splice the dark blue and light blue where the Cables comes out to the left flasher, if i make a splice there the colours still be correkt att each bulb and it it would look and perform as stock.
Plus the Cable length would be correct as well.
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