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  #1  
Old 06-22-2011, 09:04 PM
MazdaDS MazdaDS is offline
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Default Attaching L.E.D. wiring to Headlight switch

Hi,

I am trying to attach some L.E.D.'s to my headlight switch so that when i turn on my headlights my L.E.D.'s will light up in my footwells.

Any idea on how to do this? like where do i connect the positive wire? then the negative?

thanks in advance!
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  #2  
Old 06-22-2011, 09:14 PM
01B3000 01B3000 is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

Well were in the same boat basically, you need to hook it up to the parking lights, but im unsure what wire it is. As for ground, just ground it on any metal closest to it.
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Old 06-22-2011, 10:12 PM
buggman buggman is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

Look behind your radio bezel for a red/black wire, around the fog switch or 4x4 connectors (if you have fogs or 4x4) or behind the gauge cluster, same red/black wire.

That wire will be the dash illumination power wire that comes on when you turn on the parking/headlights.

For a ground, you can simply use any screw or bolt that's securely fastened to a piece of metal of the body/frame.

(NOTE)
Some newer trucks use a different color wire for the dash illumination, hopefully someone will chime in with the color codes.
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Old 06-23-2011, 05:56 AM
MazdaDS MazdaDS is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

Thanks! my truck is an '03...no so new..so the red/black wire should be it. I dont have 4x4 so just it should be with the gauge cluster
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Old 06-23-2011, 10:13 AM
01B3000 01B3000 is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

If you go from the light switch it should be a brown wire i discovered that today
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Old 06-23-2011, 10:35 AM
MazdaDS MazdaDS is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

well i think i f***ed up. i found that the dash was too hard to get apart so instead of wiring to my headlights or gauge cluster, i was gonna wire to my headunit. i did so by attaching the positive wire to the ignition 12v+ wire and it worked at first, but now nothing works (nothing = L.E.D.'s, headunit, or my amp for my subwoofers)

Idk whats wrong and im really fustrated...

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Old 06-23-2011, 10:39 AM
brett20 brett20 is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

i just hooked mine to a cig lighter chord and i plug em in when i want em on, if i dont want em on i leave the chord unplugged, easy as hell and all the wires are hidden
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Old 06-23-2011, 10:43 AM
Blacked Out FX4 Blacked Out FX4 is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

Quote:
Originally Posted by MazdaDS View Post
well i think i f***ed up. i found that the dash was too hard to get apart so instead of wiring to my headlights or gauge cluster, i was gonna wire to my headunit. i did so by attaching the positive wire to the ignition 12v+ wire and it worked at first, but now nothing works (nothing = L.E.D.'s, headunit, or my amp for my subwoofers)

Idk whats wrong and im really fustrated...

Even tho LEDs have very little draw it could have been enough to blow a fuse. So check your fuse panel (with a fuse location diagram) and go fuse by fuse that would be linked into the head units curcuitry.
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Old 06-23-2011, 11:14 AM
FireRanger FireRanger is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

The current draw from your LED's didn't exceed the fuse capacity. Not a chance. Something else shorted it out, probably exposed wiring in whatever you did to splice it.

Ditch all that. The brown wire behind the headlight switch is what you want to use. It is powered anytime the parking lights or headlights are on. Repair any splices you made elsewhere. For the ground, as buggman said, you can use any screw that goes into body metal. Or you can use the ground wire going to headlight switch too. Your LED's power wire should have its own fast acting 2.5 or 5 amp inline fuse on it as well where you tie it into the brown wire.
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  #10  
Old 06-23-2011, 08:19 PM
MazdaDS MazdaDS is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

Thanks everyone for your input..but i got it working..i blew a fuse for the radio and had to put a new fuse in. So now my L.E.D's come on when my radio is on. ill post pics tomorrow. Thanks everyone!

here's a rough pic from my phone:


Last edited by MazdaDS; 06-23-2011 at 08:27 PM. Reason: add pic
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Old 06-24-2011, 05:19 AM
FireRanger FireRanger is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

Right. But fuses don't just blow for no reason. If you just did wiring work, and the fuse blew shortly after, something is wrong back there.
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  #12  
Old 06-24-2011, 05:36 AM
MazdaDS MazdaDS is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

well alot of the fuses lok rough, like they are stock fuses..and this truck is 8yrs old. maybe that little extra caused it to blow. anyways i replaced the fuse and it works now. if it blows again, ill up the fuse to a 10 instead of 7.5
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Old 06-24-2011, 07:11 AM
FireRanger FireRanger is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

Quote:
Originally Posted by MazdaDS View Post
well alot of the fuses lok rough, like they are stock fuses..and this truck is 8yrs old. maybe that little extra caused it to blow. anyways i replaced the fuse and it works now. if it blows again, ill up the fuse to a 10 instead of 7.5
Ok. I can only explain the same thing so many different ways. The age has nothing to do with it. And these LED's did not cause you to exceed the fuse's 7.5 amp capacity. Something is wrong with the lights or something is wrong with your wiring. Do NOT increase the fuse to a higher rating unless you like smoke. If you want to leave it on that circuit, that's fine, but you need to find the problem first. Or just let it burn down. Up to you.
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  #14  
Old 06-24-2011, 07:15 AM
MazdaDS MazdaDS is offline
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Default Re: Attaching L.E.D. wiring to Headlight switch

i do agree, maybe there was something wrong with the wiring before..but it hasnt blown since so im hoping everything is fine. if it blows again then i will move the wiring. but i dont want to mess with something that currently works. but i do understand what you are saying.
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  #15  
Old 06-24-2011, 05:22 PM
MazdaDS MazdaDS is offline
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Default Here are some pics

I added this L.E.D. today, behind my seats and between the subwoofers..


This is passenger side footwell...


This is driver side footwell...




I want to thank you all for your help and input. i am now a loyal person to FRF thanks to all of you.
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'03 Mazda B3000 Dual Sport 3.0L V6
Installed:
Blue L.E.D.'s | 12" Punch Stage 1 Sub | JVC headunit | 760w Pioneer Amp | Procaps Bed rail caps | AVS Bugshield | Cherry Bomb Glasspack | Throttle Cable Mod | Air Box Mod | Extang Tonneau Cover

Future: 3" lift | bigger tires | Dual exhaust

Last edited by MazdaDS; 06-24-2011 at 05:22 PM. Reason: thanking ppl...
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