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  1. #16
    Street Tire
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    Quote Originally Posted by JPaul View Post
    I did this with my H3 on Saturday
    Just installed a ROAV dash cam, I ran the cable from the cigarette lighter and up to the dash cam temporarily, and want to pull power from the mirror when the 12-5v connector gets here.

    But something here is confusing. If the idea is to tap into the rearview mirror power cable+ground, why would you have to pass cables through the roof? Where do those connect on the other end?

    What I was thinking was T-tapping into the mirror pos & neg, connecting the 12-5v converter with micro usb and put that in the dash cam.
    2009 HUMMER H3 - V8 swap on 4.56

  2. #17
    El Diablo
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    If I recall correctly, there's a good sized adapter block in the USB cable that I wanted to hide so I stuffed it in the headliner. So it's not passing cables through the roof but hiding extra cable in the headliner.

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    humvee (07-13-2018)

  4. #18
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    I know it's not the same, but this is my dash cam setup that's worked well for me the last year with no issues. Using a Viofo a119s with GPS mount (makes it easy to remove if needed) + 64 Gb Samsung EVO card and an on/off button splitter since the H3's cigarette lighter is always on. Records several hours of 1080p footage before overwriting.

    Ran the USB cord tucked in the headliner, down the door, then under the glove box. Didn't need to remove anything and no wires showing. Attached it to a splitter with an on/off button so I can easily turn the dash cam on or off with a simple button push. Works well since the cigarette lighter is always on 24/7 and the switch lets you turn off the dash cam when it's not needed. Plus, it still has the cigarette lighter free for use for charging phones or whatever.



    2010 Hummer H3 Alpha Adventure

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    humvee (07-13-2018)

  6. #19
    Street Tire
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    Very nice setup, and looks like you end up with some spare sockets. There's no way I'd remember to switch that off, and if I did I'd probably forget to switch it back on.

    I need the dash cam because the locals here have very poor driving etiquette, they tailgate and flash their LEDs into your cabin, and if you don't move, some would overtake you and hit the brakes. The law in place now considers this attempted murder (if you can prove it), but they still do it anyway. Granted thats never happened to me while driving the Hummer, but you never know.

    I'm also thinking about relocating the connections for my backup camera from the mirror to my double din. But thats for a different thread.
    2009 HUMMER H3 - V8 swap on 4.56

  7. #20
    Street Tire
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    Since my dash cam cables are already neatly tucked into the ceiling trim and down the A pillar. I can utilize the the spare wire loom near the emergency brake.

    Correct me if Iím wrong, but I recall reading theyíre intended for roof lights or other accessories, and others for the tow package wiring .
    If Iím not mistaken, these only get power when the car is in ACC or running.

    2009 HUMMER H3 - V8 swap on 4.56

  8. #21
    El Diablo
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    Not sure on those wires, but that's a good way to get it done.

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    humvee (07-15-2018)

  10. #22
    Baja
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    Don't forget that the wires for the roof/grill light switches you're holding there are stubbed on both sides of the firewall. You'll need to splice them in to something else to get power. You could get the pigtail that connects to the underside of the fuse box and tap into the factory circuits:

    http://www.hummer4x4offroad.com/foru...l=1#post183639

    https://www.amazon.com/ACDelco-PT209.../dp/B005OVAEC4
    2008 H3 Alpha
    2008 Victory Red H3

    "Live free or die: Death is not the worst of evils." - General John Stark

    N1JPA


 

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