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Camry Hybrid General discussion forum for the Toyota Camry Hybrid.

This is a discussion thread titled "How/where do I tap into +12V power source?", within the Camry Hybrid forum, part of the Cars & Vans Forums category.


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Old 10-31-2006, 06:02 PM
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Default How/where do I tap into +12V power source?

Hi All,

I got an aftermarket HID conversion kit. It looks like I'll need to tap into a 12v source. Since the battery is located in the rear of the vehicle, I am unable to connect the relay that comes in the kit to the battery.

Looking around, I'm not sure where/how else to connect it. I was thinking of getting a solderless wiring kit and splicing the headlight connector to connect the positive battery feed to the relay.

Does anyone have any suggestions? I'd rather not cut into the headlight wiring if possible.

Thanks!
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Old 10-31-2006, 11:39 PM
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Default Re: How/where do I tap into +12V power source?

In your car is a center armrest between the front seats. Ahead of that is a small plastic receptical. In that place you will find a little hole labeled 12v/120w. This may be what you are looking for. There may be a similar place for service from the rear seat, seems the Owner's Manual may have mentioned it, have a look. We used to have a saying in the flying business, "When all else fails, read the op manual".
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Old 10-31-2006, 11:44 PM
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Default Re: How/where do I tap into +12V power source?

Sorry, I did not understand your msg until reading it a second time. You are interested in re-doing your headlights somehow. I would ask for professional help in so doing. A new wiring harness for this technology car will probably run $1200-1500. It would be easy to fry the existing harness unless you understand the system.
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Old 11-01-2006, 01:22 PM
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Default Re: How/where do I tap into +12V power source?

I've asked the tech folks at ZenonDepot.com this exact question. Will post when I get a reply.

At this point I know that while during regular time on, an HID uses about 35w power vs the 55w bulb in the stock halogen setup there is more to it. The HID system needs a big "kick" to get the gas in the HID bulb glowing and that is the function of the "ignitor" component. The question is how much much capacity in watts or amps does that need to safely be? It's tempting to just power the whole setup from the stock low beam connector but is it right/safe?
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Old 11-01-2006, 05:46 PM
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Default Re: How/where do I tap into +12V power source?

Elmo over at greenhybrid.com did it and he said it works. I've asked him what he did and I'm waiting for a reply.

After reading up on Automotive Lighting FAQ - headlamps and HID harness , I want to connect the xenondepot kit I just got directly to the battery, instead of splicing into the stock headlight connector.

I took a quick look around the engine compartment and could not immediately identify a spot to tap into a 12v source. I'm planning on running a wire somehow from the battery in the back to the front. My only problem is how to conceal the wire. I think they go through the driver side under the scuff plate, but I dont know. I'm not that well versed in auto servicing.
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Old 11-01-2006, 09:02 PM
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Default Re: How/where do I tap into +12V power source?

OK.... Steve at ZenonDepot emailed me back and said they do NOT recommend pulling the bulb power from the stock plug. Instead use the stock connector to close a relay that pulls power through a new wire from the battery or from somewhere in the engine bay. He said it needs to be able to handle the 17A draw when the HID ballast loads. Stock connectors provide about 9A (55w x 2 / 12v = 9A) so they are overloaded using them for primary power to HIDs. I'm looking at pulling a wire (16G) from battery through the car to engine bay. There is lots of info on getting 12v power for audio systems on the web.... it's just that they are backwards from us - battery source is in engine bay and their amps are in trunk!
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Old 11-02-2006, 12:42 AM
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Default Re: How/where do I tap into +12V power source?

Thanks for the info. The more I researched it, the more I decided against tapping the power from the stock headlight connector. I downloaded a copy of the camry hybrid service manual to see how I can pull a wire (18gauge) all the way to the battery. I'm new to reading the service manuals, but it looks like perhaps I can run a wire beneath the scuff plate either on the drivers or passenger side.

I guess I'll be disassembling my TCH over the weekend. Let me know what you end up doing in case you find an easier way to run a wire to the battery
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Old 09-27-2007, 01:05 PM
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Default Re: How/where do I tap into +12V power source?

Can I ask where did you download the manual from??
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Old 09-29-2007, 11:25 AM
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Default Re: How/where do I tap into +12V power source?

Another Aftermarket HID mess in the brewing process....

"the blind leading the blind"

LT
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