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What’s this thingy under the dash?

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Old 12-13-2023, 08:09 PM
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Crozzer
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Default What’s this thingy under the dash?

I’m trying to find a good hot and a switched power source under the dash and came across this plug just hanging out, any idea what that’s for? Maybe entry and drive (an option I do not have?)

What’s that plug?


While we are at it, any suggestions for a good site to tap in that big bundle? I’m trying to avoid fuse taps, just because. Thanks!

and no I can’t use the mirror. Gotta be under the dash for this install.
Old 12-13-2023, 10:34 PM
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theprf
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It's all the way to the left? If so it's the trailer brake control plug.
Old 12-14-2023, 08:13 AM
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Petza914
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Any switched circuit you find will be fine for that. Looks like that plug has both power and ground so you'll be all set. There will be a connector number on it where you can look up it's mate in a pigtail format so you can connect your stuff to the pigtail and just plug them together for a nice clean install if that's the trailer connection, can probably just look up the trailer pigtail and buy one of those.
Old 12-14-2023, 10:22 AM
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TomF
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It's definitely the Flux Capacitor!
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Old 12-14-2023, 01:30 PM
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BobcatBrian
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Originally Posted by TomF
It's definitely the Flux Capacitor!
Great Scott!
Old 12-14-2023, 02:33 PM
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TomF
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Originally Posted by BobcatBrian
Great Scott!
Mine was getting tired, so I ordered a new one from Oreilly's. https://www.oreillyauto.com/flux-capacitor
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Old 12-14-2023, 04:34 PM
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slavie
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You can order a corresponding plug for that connector. You know you want to. Level up your game by not using taps.
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Old 12-14-2023, 06:09 PM
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Now if I found an unused plug with one switched and one constant circuit, we'd be in business.
As it is, I think I'm going to do surgery on the bundle of wires just to hide the taps under the dash, then run to a new small fuse box that is functional and accessible next to the rest of the fuses.
Close enough to looks nice (without the pain of figuring out how to add new circuits to empty slots on the existing fuse board.
Old 01-29-2024, 04:06 PM
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545moose
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Originally Posted by slavie
You can order a corresponding plug for that connector. You know you want to. Level up your game by not using taps.
Where would one find such a device
Old 01-31-2024, 04:03 PM
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phatz
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Originally Posted by 545moose
Where would one find such a device
molex
Old 01-31-2024, 07:48 PM
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JAGMAN1
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You order the trailer brake wiring harness from the dealer that has the correct connector for the plug. Then you buy a trailer brake controller of which there are many brands (I bought from RedArc) and it will wire up to the harness.

This is only required if you have a trailer with electric brakes. Many trailers have surge brakes which don’t need any of this. Figure out what type of trailer you have, and that will tell you whether you need to wire up a controller.
Old 02-01-2024, 01:14 AM
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IchBautAuto
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Which dealer is that, Porsche or trailer parts?
I emailed Tekonsha for the harness (their part No) as it isn't available locally and they did a great job of totally ignoring the request.
Old 02-01-2024, 11:54 AM
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theprf
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There is a seller on the USA ebay that makes up these brake control harnesses for about $50. I have been meaning to get one for my hopkins insight brake control, just have not done so yet.
Old 02-01-2024, 09:46 PM
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I'll knock one up. Saves some time and part chasing if I can buy ready made but I'm having a lot of difficulty swallowing the recent freight fees.
Old 02-02-2024, 02:11 PM
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jAndrewH
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May I ask what you are wiring up? If it is a dash cam then a good solution is an adapter that uses the OBD port. It will sense the voltage and stay on until the voltage is too low and shuts off (cannot remember what the actual voltage point is). Works well for me.


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