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Radar Detector Hardwire [HOW-TO]

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Old Aug 15, 2010 | 04:21 AM
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E500
Radar Detector Hardwire [HOW-TO]
So as you can see from my 3.5mm Audio Jack Reroute hardwire [HOW-TO] I dont like wires handin around so while i was doing the 3.5 jack re-route I decided to hardwire my radar detector. Looks like this was done by others here on the forums so this is my input on how i did it

go here and follow my instructions for taking the the center console apart.

I ran the wire from where i wanted the detector to be so I could make sure I have enough wire to do the job. The Passport uses RJ45 wire (phone cord).

You can pull the A piller cover loose. The clips are alittle tight it pops out
Radar Detector Hardwire [HOW-TO]-dsc00352-medium-.jpgRadar Detector Hardwire [HOW-TO]-dsc00350-medium-.jpg

I then ran it down the rubber door flap along the door jam
Radar Detector Hardwire [HOW-TO]-dsc00353-medium-.jpgRadar Detector Hardwire [HOW-TO]-dsc00354-medium-.jpg

Now remove the 2 torx under the drivers side dash
Radar Detector Hardwire [HOW-TO]-dsc00343-medium-.jpg
Last edited by Cbtech; Aug 15, 2010 at 05:06 AM.
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Old Aug 15, 2010 | 04:50 AM
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E500
After Running it through the dash (used a long wire tie)
Radar Detector Hardwire [HOW-TO]-dsc00051-medium-.jpg

I ran it under the center console cross brace. In my E500 I found the power the block for the rear cigarette lighter it had a solid brown wire and and a yellow wire with a black stripe. This should be standard for most E500's.
Radar Detector Hardwire [HOW-TO]-dsc00050-medium-.jpg

I found the yellow and black stripe wire was the hot line.
I didnt want to do ANY kind of splicing so I decided to tuck the wires into the back of the distro block. I tested it by turing the ignition swich on and off to make sure the detector turned on when the car turns on.
Radar Detector Hardwire [HOW-TO]-dsc00049-medium-.jpg

I then used black tape to secure the wiring.
Radar Detector Hardwire [HOW-TO]-dsc00052-medium-.jpg

Put everything back in the reverse order.

here is the final result
Radar Detector Hardwire [HOW-TO]-dsc00348-medium-.jpgRadar Detector Hardwire [HOW-TO]-dsc00078-medium-.jpg

I hope this helps!
Last edited by Cbtech; Aug 15, 2010 at 05:55 PM.
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Old Aug 15, 2010 | 04:56 PM
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From: austin, texas, usa
2006 e320 cdi
Originally Posted by Cbtech
...
I then ran it down the rubber door flap along the door jam
Attachment 189714
Actually, in this picture, if this is the driver side door, that panel just below the dash is the fuse box, there are plenty of empty slots you can tap in for 12 volt supply.
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Old Aug 15, 2010 | 05:53 PM
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Originally Posted by anewbie
Actually, in this picture, if this is the driver side door, that panel just below the dash is the fuse box, there are plenty of empty slots you can tap in for 12 volt supply.
Yeah I knew about that. unfortunatly all of the fuses are constantly hot. I couldnt find any that would turn off when the ignition is turned off.
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Old Aug 15, 2010 | 06:09 PM
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From: austin, texas, usa
2006 e320 cdi
Originally Posted by Cbtech
Yeah I knew about that. unfortunatly all of the fuses are constantly hot. I couldnt find any that would turn off when the ignition is turned off.
Good point! You are probably right about that. For the purpose of my application (bluetooth connectivity), I actually need constant 12v...
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