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Old 12-06-2010, 11:10 AM   #1
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Relay 666 Headlight mod

Hi all - just wanted to post up a version of the relay 666 headlight mod which allows your inboard H7 halogens and your outboard xenons to operate simultaneously as high beams.

I've seen a number of other posts where people are modifying the relay, or the wiring under the relay panel. While that works, it cannot be reversed easily.

After doing some reading - I chose the method shown in the attached pic. Basically you connect terminals 87, 87a, and 30 with a wire. You remove the relay and insert the jumper wires, allowing you to switch back at any time.

My jumper wire is basically a "tripod" with three equal length "legs"

If you only jumper 87 and 87a, you loose the "flash to pass" functionality altogether.

My vehicle is a 2003 Aero.

Best,
Andy
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Old 04-27-2012, 06:43 AM   #2
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how long did you have this method in place? any issues?

any one else doing it this way? or is buhuspg the only one?
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Old 04-27-2012, 07:53 AM   #3
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I'm still running it. I like it a lot. It takes all of about 10 minutes to do, and if you don't like it, pop the relay back in.
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Old 04-28-2012, 03:46 AM   #4
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What do you mean with " inboard H7 halogens and your outboard xenons"?
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Old 04-28-2012, 05:18 AM   #5
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Look at your headlights, if you have xenons. The xenon bulbs are on the outside part of the headlight housing, the halogens are closer to the center of the car.
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Old 04-28-2012, 05:21 AM   #6
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Interesting tags...

And BTW, if anyone has any reasons not to do this mod, I would be curious to hear them.

I've been pleased with the additional light output, and my car has only caught fire three or four times since
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Old 04-28-2012, 06:09 AM   #7
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Quote:
Originally Posted by BuHuSPG View Post
And BTW, if anyone has any reasons not to do this mod, I would be curious to hear them.



j/k...I'm sure it's a good mod.
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Old 04-29-2012, 08:35 PM   #8
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Any idea if this works on 9-5's with Halogen / Halogen (older models maybe)?
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Old 04-29-2012, 08:37 PM   #9
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Quote:
Originally Posted by MOD2K95AERO View Post
Any idea if this works on 9-5's with Halogen / Halogen (older models maybe)?
My 2007 9-5 without xenons already lights all 4 H7 bulbs when the high beams are on.
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Old 09-14-2013, 12:13 PM   #10
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i didnot do eany mod to wiring just replaced relay with orange one that was missing. hid low, hi7 iner reprogramed parking lights daytime runing lights . instead of hid on all the time tech2. led h7
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Old 02-15-2015, 06:10 AM   #11
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on zenon 9-5s there is a 16$ relay that can be popped in, to make this work.

the flash to pass lights only work from the factory when in Alt 1 lighing (switched with tech 2) however this relay will make them work in tangent with your high beams


SAAB Flash to Pass Relay - Bosch 101E100012 - Free Shipping
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Old 02-16-2015, 04:20 AM   #12
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As mike points out, there are certainly more glamorous ways to do this!

I do not have my Aero anymore but I had this modification on for about 18 months and the improved light output was great.

As you can see in the image in Mike's link, this mod links 30, 87 and 87a together permanently. The relay version would look prettier for sure!
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Old 02-16-2015, 07:59 AM   #13
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This is pretty awesome on a Xenon car with alternative 1 lighting mode enabled. High beam xenons, inner halogen highbeams and fog lights can all be on at once.
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The only reason it took all day to install was because we couldn't keep our dicks out of each others mouths.
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Old 02-17-2015, 09:18 AM   #14
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I felt like I should bake oncoming traffic some cookies or something
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Old 06-01-2015, 04:15 AM   #15
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Done correctly, this is not only a safe long-term solution to very poor night visibility on high-beam, but it's even easier now. There is a jumper made and sold that looks and plugs in just like a relay, but it's simply a plug-in version of this "jump." All you do is open the hood, open the relay box, pop it in, close everything up and enjoy. The only caution:

DO NOT USE H7 BULBS IN YOUR HI SOCKETS WHICH EXCEED OEM WATTAGE.
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Old 05-25-2016, 04:22 AM   #16
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Will this work for 03 saab 93 linear
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'hot' aero, do not try this at home, kludge, relay 666

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