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Bypass headlight wiring harness?

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Old 10-13-2013, 04:20 AM
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Slightly hijacking this thread, but does anyone know a source for replacement headlight harnesses (from the aforementioned connector, to the headlights/turnsignals/etc)? I didn't have a problem with the connectors, but right after the connectors (on the headlight side) the wires literally broke off from being brittle. I fixed them (very well, I might add), but I know eventually they are going to rear their ugly heads (Murphy taught me this). Would love to have a replacement harness on hand.
Old 11-07-2016, 12:13 AM
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Originally Posted by wikiwaugh
Forgive my lack of wire routing knowledge here. What I've done so far is eliminate that harness. I like the idea of a dual throw switch, the same as I just used for the Taurus fan swap.

At this point, I imagine it wouldn't be beneficial to just relocate the necessary wires at the headlight switch for the dual throw?

I've tested and checked all ground/fuse/relay connections. My problem being that all my lights are functional apart from having to literally hold the high beam switch while I drive to get headlights on. And that only provides high beams, no low beam.

Hope none of that was confusing. Thanks so much for that diagram


Wait. I'm not as familiar with 91 as I am with 98-01 but couldn't the hi-low switch be bad? He should check for voltage at the connector. The connector needs to be dealt with regardless but just a thought.
Old 11-07-2016, 07:40 AM
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Originally Posted by Waynerd
Wait. I'm not as familiar with 91 as I am with 98-01 but couldn't the hi-low switch be bad? He should check for voltage at the connector. The connector needs to be dealt with regardless but just a thought.
Do you realized you just replied to, and bumped, a 3+ year old post.
Old 11-25-2019, 06:13 PM
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bump, another 3 years. i have same problem with headlight connector behind airbox, i dont understand what exactly putting this in
Amazon.com: Putco 230004HW Premium Automotive Lighting Wiring H4 100W Heavy Duty Harness and Relay: Automotive Amazon.com: Putco 230004HW Premium Automotive Lighting Wiring H4 100W Heavy Duty Harness and Relay: Automotive
does
Old 11-25-2019, 06:40 PM
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Originally Posted by Vitality62
bump, another 3 years. i have same problem with headlight connector behind airbox, i dont understand what exactly putting this in Amazon.com: Putco 230004HW Premium Automotive Lighting Wiring H4 100W Heavy Duty Harness and Relay: Automotive does
What's wrong with the connector? Or is it a headlight issue you're having?
Old 11-25-2019, 06:46 PM
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Originally Posted by Vitality62
bump, another 3 years. i have same problem with headlight connector behind airbox, i dont understand what exactly putting this in Amazon.com: Putco 230004HW Premium Automotive Lighting Wiring H4 100W Heavy Duty Harness and Relay: Automotive does
The harness powers the headlights directly from the battery, with the original wiring harness triggering relays to turn them on/off. The benefit of this is to remove all the electrical load from the inadequate stock wiring, allowing you to safely run brighter bulbs and giving you more voltage to the headlights. You're still going to need to fix the burnt connector, but with the upgraded harness that connector and wiring won't be handling the high current that caused it to melt in the first place.

Last edited by lawsoncl; 11-25-2019 at 08:29 PM.
Old 11-25-2019, 07:29 PM
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Old 11-25-2019, 09:15 PM
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Originally Posted by Vitality62
bump, another 3 years. i have same problem with headlight connector behind airbox, i dont understand what exactly putting this in Amazon.com: Putco 230004HW Premium Automotive Lighting Wiring H4 100W Heavy Duty Harness and Relay: Automotive does
It allows you run high power headlights that draw more juice than the stock wiring was designed for or
It makes up for voltage drops due to corrosion inside the wiring insulation and also makes up for poor grounds or
It allows your headlight and high/low switches to last indefinitely as the relays now become the electrical load bearing "switches".

Take your pick.

Last edited by ijeeep; 11-25-2019 at 10:49 PM.
Old 11-26-2019, 10:07 AM
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Originally Posted by cruiser54
What's wrong with the connector? Or is it a headlight issue you're having?

Old 11-26-2019, 10:09 AM
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how is that new harness hooked up if i need to repair this one? solder these wires together then do what from where with the amazon harness?
Old 11-26-2019, 10:22 AM
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I would just clean up that connector as best you can with a wire brush. It's not going to need to handle any real current if you do the headlight upgrade harness If you think it's too far gone, then cut and splice the wires. The new harness is plug-n-play. You unplug the headlights from the original wiring and plug them into the new harness, the new harness will plug into one of the original headlight connectors for the "trigger" for the relays, and then power and ground go to the battery.
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Old 11-26-2019, 10:47 AM
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that is awesome! so basically do that and splice my corroded connector wires together? i have to splice them 2 of them came right out of the terminal lol
Old 11-26-2019, 11:06 AM
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Originally Posted by Vitality62
that is awesome! so basically do that and splice my corroded connector wires together? i have to splice them 2 of them came right out of the terminal lol
Yup.
Old 11-26-2019, 11:17 AM
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thank you sir, keep the ol beep goin
Old 06-02-2021, 09:17 PM
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I'm a novice here but if I Solder the wires, why then do I need to buy that part from Amazon? And where do I attach it if I'm soldering the wires to bypass that connector? I also watched that headlight harness install, but I'm confused as his new connector is by the battery on the passenger side where my issue seems to start at the corroded connector under the air filter on the driver side... I'm not seeing where it'd connect after the soldering.... thanks a lot

Last edited by ichabod; 06-02-2021 at 09:32 PM.


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