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LED Headlight swap problem

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Old Feb 16, 2022 | 02:54 PM
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Default LED Taillight swap problem

I swapped out my halogen headlights with LED's and also added the correct harness. I made the correct change in FORscan (bulb out detection). So the problem is, when the brake is pressed, both the brake and the yellow blinker light up. Also, when the headlights are on the tail lights do not turn on. Thoughts? Sound like a harness issue?

Last edited by random155; Feb 17, 2022 at 07:03 AM.
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Old Feb 16, 2022 | 02:55 PM
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Old Feb 16, 2022 | 03:03 PM
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Sorry can an admin change this to taillight swap - not headlight
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Old Feb 16, 2022 | 04:03 PM
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Where did you get the harness from or is it home made?
If you can get a hold of a wiring diagram it may help point out what's not wired up correctly.
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Old Feb 16, 2022 | 04:13 PM
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Agree the harness is likely the problem. This is a classic "ground fault" type issue.
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Old Feb 16, 2022 | 06:41 PM
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Originally Posted by Blueshound;[url=tel:7143196
7143196[/url]]Agree the harness is likely the problem. This is a classic "ground fault" type issue.
Thanks. Got it sorted. There are actually 3 settings to change in FORScan. I only changed the 1 setting listed in the “common” tab on the FORScan spreadsheet on the first page.
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Old Feb 16, 2022 | 07:43 PM
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Originally Posted by random155
Thanks. Got it sorted. There are actually 3 settings to change in FORScan. I only changed the 1 setting listed in the “common” tab on the FORScan spreadsheet on the first page.
Wow, great 👍 But, makes me even more reluctant to try ForScan lol.
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Old Feb 16, 2022 | 08:36 PM
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Originally Posted by Blueshound
Wow, great 👍 But, makes me even more reluctant to try ForScan lol.
It wasnt forscan - it was just i didnt know exactly what values to change. I appreciate the forscan guys but the first page in the spreadsheet is a little misleading in regards to this mod. It makes it seem like you only have to change one value during the swap. My fault for not researching more.
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Old Feb 16, 2022 | 08:42 PM
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I swapped my halogens for LEDs too. I only had to update one value in forscan for them to work. What’d you update?
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Old Feb 16, 2022 | 08:44 PM
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Originally Posted by Bullett
I swapped my halogens for LEDs too. I only had to update one value in forscan for them to work. What’d you update?
726-44-02-00XX-XXXX-XXXX
726-43-02-0102-02XX-XXXX
726-43-01-XXXX-XXXX-01XX

I originally only changed the first value. Once the others were changed everything worked like it should.

THIS IS FOR TAILLIGHTS


Last edited by random155; Feb 16, 2022 at 08:53 PM.
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