DIY: Hotwire a radar detector?
Thread Starter
Senior Member
Joined: Nov 2015
Posts: 372
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From: Boynton Beach. FL
2017 C300 Coupe, 2013 Cadillac ATS 2.0T
DIY: Hotwire a radar detector?
I'll be getting my 2017 c300 coupe sometime in August. I'd like to hotwire my V-1. Any DIYs for this?
Thread Starter
Senior Member
Joined: Nov 2015
Posts: 372
Likes: 21
From: Boynton Beach. FL
2017 C300 Coupe, 2013 Cadillac ATS 2.0T
If possible, I like to wire through the overhead console, run the wire from the console just under the overhead liner and come out by the driver's visor. The V-1 is placed on on my visor (where is nice and high and usually can't be seen from the outside.) An alternative can be to wire into the fuse box which is located on the passenger side wall under the dash and run the wire up the passenger side A pillar, continuing just under the overhead liner, ending at my visor. But, all this will have to wait until someone has a better idea or when I get my car and can see just what can be done.
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Joined: Nov 2015
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C63s
Can someone check to see if the Homelink transmitter functions when the vehicle is off?
This is how I wired my detector in my 2015 Audi S4.
Worked a champ.
Assuming it's switched power, as it was in the Audi...
This is how I wired my detector in my 2015 Audi S4.
Worked a champ.
Assuming it's switched power, as it was in the Audi...
Thread Starter
Senior Member
Joined: Nov 2015
Posts: 372
Likes: 21
From: Boynton Beach. FL
2017 C300 Coupe, 2013 Cadillac ATS 2.0T
Now that I have my coupe, it looks as though the edges where I thought to stuff the wire up the A-pillar are too tightly fitted together to allow for stuffing without marring the dash or A-pillar. So, if there is switched power wire in the overhead console, can some one tell me how to get to it? That is, which colored wire and how do you remove the console lid?
Thread Starter
Senior Member
Joined: Nov 2015
Posts: 372
Likes: 21
From: Boynton Beach. FL
2017 C300 Coupe, 2013 Cadillac ATS 2.0T
If your coupe has essentially the same fuse boxes as my 2017 C300, then this should help you:
You'll find the fuse map at post #4 (Fuse Map?). You can try this first (
FuseMap.pdf ). I used the glove box fuse as it went on/off with the ignition which was located in the driver side dash...at its end. The fuse for the glove box is fuse 216. I've had it working now for 3 weeks and all is OK. Good luck.
You'll find the fuse map at post #4 (Fuse Map?). You can try this first (
FuseMap.pdf ). I used the glove box fuse as it went on/off with the ignition which was located in the driver side dash...at its end. The fuse for the glove box is fuse 216. I've had it working now for 3 weeks and all is OK. Good luck.
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Joined: Aug 2002
Posts: 337
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From: Dallas, TX
2017 AMG C63S Coupe
If your coupe has essentially the same fuse boxes as my 2017 C300, then this should help you:
You'll find the fuse map at post #4 (Fuse Map?). You can try this first ( FuseMap.pdf ). I used the glove box fuse as it went on/off with the ignition which was located in the driver side dash...at its end. The fuse for the glove box is fuse 216. I've had it working now for 3 weeks and all is OK. Good luck.
You'll find the fuse map at post #4 (Fuse Map?). You can try this first (
FuseMap.pdf ). I used the glove box fuse as it went on/off with the ignition which was located in the driver side dash...at its end. The fuse for the glove box is fuse 216. I've had it working now for 3 weeks and all is OK. Good luck.MB World Stories
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Thread Starter
Senior Member
Joined: Nov 2015
Posts: 372
Likes: 21
From: Boynton Beach. FL
2017 C300 Coupe, 2013 Cadillac ATS 2.0T
If your glove box light goes on/off with the ignition, I'd still give fuse 216 a try. I'd get a fuse tap (eg, http://www.autozone.com/electrical-a...ies/32416_0_0/), place a 7.5amp fuse (this is the size used in my 216) into the tap and then a 1amp fuse into the tap part that goes to the radar unit. I'd then jury rig up and see if it works. If it works, then finalize the install.
Senior Member
Joined: Aug 2002
Posts: 337
Likes: 20
From: Dallas, TX
2017 AMG C63S Coupe
If your glove box light goes on/off with the ignition, I'd still give fuse 216 a try. I'd get a fuse tap (eg, http://www.autozone.com/electrical-a...ies/32416_0_0/), place a 7.5amp fuse (this is the size used in my 216) into the tap and then a 1amp fuse into the tap part that goes to the radar unit. I'd then jury rig up and see if it works. If it works, then finalize the install.
Thread Starter
Senior Member
Joined: Nov 2015
Posts: 372
Likes: 21
From: Boynton Beach. FL
2017 C300 Coupe, 2013 Cadillac ATS 2.0T
If the glove box light does go on/off with ignition, you could try to get the "fuse holder" that goes in there...then use the fuse tap. If not, you could check for likely ignition dependent fuses onthe rest of the fuse block. Otherwise, that's it for me. Good luck.
Senior Member
Joined: Nov 2016
Posts: 328
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From: Houston/Sugar Land, TX
C63s
My is a very clean setup. I ran the wire through the a pillar and then under the steering wheel well and then to the cigarette lighter connection. I had to remove the waterfall center dash to connect it to the lighter connection; wasn't difficult at all. I did blow a fuse trying to figure out which one is positive because I am color blind, but that was an easy replacement.
