- Mercedes-Benz C-Class: How to Hardwire Radar Detector
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C63's w Hardwired V1 Detectors
Does anyone know which wires to tap and where. Lots of posts for other benz's but not anything really for the C63 that anyone has go thru it.
I Just want the hardwire to stick out from the top of the front windshield
Any thoughts or opinions?
I gave up on looking for a hard-wired solution and followed this poster's writeup:
https://mbworld.org/forums/c63-amg-w...utlet-mod.html
Worked like a charm and I'm grateful to the OP in that thread who came up with it.
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Last edited by DuaneC63; Aug 26, 2011 at 03:11 AM.
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Use a card to open the overhead control panel. push the card in with confidence. the starbucks card is an MB special tool!

the panel flips open.

Track the bundle that is shown with red arrow:

Or you can follow the same bundle that has this tag, all the same:

(5400510 on my 2011 MY)
I believe this bundle includes the power line for the map light for the rear passengers. This was the best option for me because it does auto off a few minutes after the ignition is turned off and immediately when the alarm is activated.
There are more than one red wire with a black line in that bundle and I don't remember how I picked it, but I tested it for the rear map light with a voltmeter.
I use the base of the mirror mount that is a metal piece screwed to the roof skeleton as my ground. I just jammed the ground clip from the V1 harness in there and made sure it was stuck tight.
Here you can see the V1 piggyback clip in the said red wire.

The other end of the V1 power cable is pushed through the headliner and windshield gap on the left side of the rear view mirror.

This is where I like the V1 best. I have all of their remote attachments but this way there is no need for those.
I have done this successfully on two C63s, but keep in mind that you are messing with the electronics that are attached to the car's computers and you are risking damaging something or voiding your warranty, not to mention fire!!!
I am maxed out on attachments for this post. B'Bye
Last edited by cyberorth; Sep 4, 2011 at 11:03 PM.
Also a general rule in auto electrical is that your wirings are either live or switched, so there is no ground wire. The car body is ground. So if I have the reading light switched OFF the wire with power is live (before the switch) and the wire without power is after the switch.
I have had this on my 2011 since May and for 2 years on my 2009. I did a similar set up on my E46 M3 prior to this. Same concept though.
I also wanted to keep my V1 mobile to use it on my other car and not to noticeably modify a leased car.
None the less that is the way to go as far as ultimate integrations go.
Last edited by cyberorth; Sep 7, 2011 at 05:43 PM.
Also a general rule in auto electrical is that your wirings are either live or switched, so there is no ground wire. The car body is ground. So if I have the reading light switched OFF the wire with power is live (before the switch) and the wire without power is after the switch.
I have had this on my 2011 since May and for 2 years on my 2009. I did a similar set up on my E46 M3 prior to this. Same concept though.
Also, the number on the sticker is a bit different. 5400009 on mine.
I had intended to set it up just like my 2009, but the 2012 has no 12v outlet in the glove box.
Is there another voltmeter that will test an auto wire without having to pierce the sheath? I'm used to testing home wiring, but then again that much higher voltage.
In my case (probably due to my skill level), I had to pull the entire rearview mirror down to pass through the wire, but once I did that it passed through with no problems.
Earlier in this thread a few people asked how to distinguish between the two black/red wires to find the 12v switched wire, and I confirmed doing my install that both of these wires in the wire cluster mentioned in the OP are 12v switched, so you can tap into either one. In my case, I ended up just running a short power wire from the overhead wire tap out behind the mirror and mounted my 9500ix just above the rearview mirror on the passenger side. Only the radar sensor protrudes below the tinted portion of the window, so it's about as stealthily as I could get it installed without blocking the sensors.
Also, here is one other resource that helps considerably in understanding how to remove the mirror and overhead assembly as easily as possible.
DIY: V1 Mirror System Install for W204 C63
The hardest thing about this DIY is getting the mirror off (and even harder is getting it back on!). After pushing with zero effect for about 10 minutes with all the strength I could muster, I ended up wrapping the top of a hammer in a car cleaning chamois, wedging it against the mirror mount, and then slamming the bottom of the hammer with the flat of my hand to pop the mirror back into place. It was a last ditch effort, but it worked without breaking anything.

I'll post pictures later but wanted to send my thanks and get this much posted for now to help anyone else trying this in the future.
I am an extremely proud new owner of a Sapphire Grey on Black/Porcelain C63 with all the goodies. I recently did some mods to the car (small visual ones) and I am so glad this website and all the users exist. I changed out the door pins to the AMG steel ones, changed the front side markers from orange to smoke, tinted the windows, and lastly hardwired my Valentine V1.
I'd like to thank everyone in this thread for contributing with amazing pictures and advice, I really couldn't have done it without you guys. I do have one question though....
My V1 turns on as soon as I unlock the car and step in. Also, unless I lock my car it will NOT turn off. The wire I tapped into was a red one with black stripe. Was this the correct one? While I know its not a big deal to just lock the car everytime, at home it sits in the garage and I would prefer it not be locked, but I don't want the V1 draining my battery. Any help would be appreciated.
It could also be that the wiring / power feed through that circuit changed between '09 and '12.








