High-Beam Wire?

[MTN2H2O]

I am adding some LED lighting, bar and pods, to my new-to-me 2014 LTZ. I want to run SPDT switches to have the option of automatically bringing on the lights when I turn on the high-beams. I've researched for hours and can't locate any info regarding the color wire for the HIGH BEAMS. This thread was the most detailed but just references the headlight, not specifying high or low, wire as being white/purple...
http://www.sonicownersforum.com/for...155-sonic-vehicle-wiring-locations-sizes.html
This one also references pretty much the same info...
https://www.the12volt.com/installbay/forum_posts.asp?tid=141768

Please help! I think it would be easiest to tap into the high beams under the dash since I plan on locating the switches on the interior fuse cover panel.

I will post a thread with some pics of how I do it so the next person wanting try will have some resources and tips. I'm mounting a 30" single row led hybrid beam light bar midnight edition made by Rough Country to some rhino rack vortex aero bars. Also planning to install some 60 deg round led flood lights to the front bumper. I work night shift in the middle of nowhere so I want to light up the night on the commute. I appreciate any detailed info that can be provided.

 

[Palmaris]

can't really help, but since the high beam bulb is completely separate from the regular bulb, can you not look at the back of it to see the color of the wire that is running to it?

 

[MTN2H2O]

I'm not sure. I understand the logic and it's possibly a perfect assumption that it's the same color under the dash as well. I'm just fearful of cutting the wrong wire based off an educated guess and causing problems. With my luck it would turn out to be one of the data cables or something critical. The more I dig, the more I think the 'headlight' wire described in other threads may go to the control module? There is no fuse for the headlights in the instrument panel fuse block, but there is both left and right high beam fuses in the engine compartment fuse block. If I can't find an answer then I may just put an add-a-circuit fuse adapter in one of the high beam fuses under the hood. This should work, or not?

 

[Papasonic]

You may, if necessary tap the hi-beam trigger wire at the bulb harness at the light connection underhood, then route the wire through a grommet at the firewall to your switches and relay. This way you know you found the correct wire; can't be too big of a problem getting a single wire through the firewall.

 

[Palmaris]

You may, if necessary tap the hi-beam trigger wire at the bulb harness at the light connection underhood, then route the wire through a grommet at the firewall to your switches and relay. This way you know you found the correct wire; can't be too big of a problem getting a single wire through the firewall.

This is what I did on my Subaru, and it made it easy to get the power from the battery to the relay, then switched on and off by the high beams.

 

[Papasonic]

This is what I did on my Subaru, and it made it easy to get the power from the battery to the relay, then switched on and off by the high beams.

Completely off topic: But I noticed we both are from Cambridge!

 

[MTN2H2O]

Thanks for the replies and suggestions. I ended up using add-a-circuits. The 'with high beam' trigger add-a-circuit is installed in the left high beam fuse in the engine compartment fuse block.

Since I used a three way switch, aka SPDT or on-off-on, I pulled the 'constant on' trigger wire from the cig lighter fuse spot located in the instrument fuse panel. I installed the switch in the fuse box dash panel since access to wiring was good, is ergonomic to use, and its location looks clean.

Conveniently, both of these fuse positions put the easiest installation of the add-a-circuits in the correct orientation so that the supplied voltage side of the fuse spot was incoming on the power side vs. the load side of the add-a-circuit. This was not the case in my truck install and required alternative measures.
The license plate light bracket worked out really well. Although I had to drill for its installation (had been avoiding and plate was zip tied to lower grill), I preferred those holes vs. having additional ones solely for the lights. My only 'complaint' was that the bracket was not wide enough for my liking as the lights would have partially blocked the bowtie emblem. This was fixed with some steel flat bar stock purchased from Lowe’s. I cut, drilled mounting holes, and attached to the top with mounting holes to spread the lights further. I'm happy with the way it turned out! I really like the way the round lights accent the oe headlights and fog lights.
Here's a pic of it mocked up before painting the spreader piece and light mounting brackets...

After paint. I need to track down some black oxide hardware so it all blends into the bumper better. Still looks pretty decent.

Just in time for my 80 mile commute to work in a snowstorm...

Up next is the 30" light bar install on the roof rack!

 

[Papasonic]

Looks good, a lot of planning went into your project! I like it.
Where I live there is seldom a time when I could use lighting like this; too many others on the roads, and low beam usage is the norm.

 

[MTN2H2O]

Looks good, a lot of planning went into your project! I like it.
Where I live there is seldom a time when I could use lighting like this; too many others on the roads, and low beam usage is the norm.

Thanks Papsonic! I work night shift in a rural area so hopefully will help me to see and avoid the four legged creatures roaming early am. There are few cars out at this hour but I wanted the lights to be triggered by the high beams so I didn’t forget to turn them off and blind other drivers. The three way switch allows me to turn on manually for special occasions like the snow, or manually turn off. I’m sure I’d get popped around home which isn’t as rural if a cop sees.

 

[MTN2H2O]

Thanks again for the help. Here's a link to my post of full install description if anyone needs for future...
http://www.sonicownersforum.com/forum/do-yourself-articles/22901-installing-driving-lights-light-bars-wiring-high-beams.html