R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

Radar Detector Hardwire

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old May 18, 2009 | 02:22 PM
  #1  
rdrracing's Avatar
Thread Starter
Newbie
 
Joined: May 2009
Posts: 1
Likes: 0
From: Jacksonville Fl
R350
Radar Detector Hardwire

Ran my passport radar detector hardwire to the passenger fuse box to hardwire and cant find a positive lead that isnt controlled by the ignition, any suggestions? The fuses seem to always have power?

I couldnt find a good positive lead in the overhead light cluster/sunroof controls either. Either place would be great. Thanks
Reply
Old May 18, 2009 | 04:54 PM
  #2  
silverspecial's Avatar
Member
 
Joined: Jan 2006
Posts: 96
Likes: 0
From: Nashville, TN
2007 R350 - P01- Black on Black, 2008 Toyota Sienna Limited
12V lighter plug in the center console is the only one any of us has used up front. I like you went to the passenger side fusebox as I didn't feel like taking apart the console to get to the plug
Reply
Old May 18, 2009 | 05:45 PM
  #3  
AsianR350's Avatar
Super Member
 
Joined: May 2008
Posts: 699
Likes: 25
From: Warrington, PA
08 R350, 12 Mercedes R350
Originally Posted by rdrracing
Ran my passport radar detector hardwire to the passenger fuse box to hardwire and cant find a positive lead that isnt controlled by the ignition, any suggestions? The fuses seem to always have power?

I couldnt find a good positive lead in the overhead light cluster/sunroof controls either. Either place would be great. Thanks
You have 2 choices:
Take the center console apart and splice the wire directly to the cigarette plug.

OR

Run the wire to the rear trunk fuse block and buy a splice fuse block from any Auto Part store to plug in the fuse block. (I think it is 15Amp fuse number 46)
Reply
Old May 20, 2009 | 12:40 PM
  #4  
davidbho's Avatar
Member
 
Joined: Nov 2006
Posts: 228
Likes: 3
From: california
X166, 997
did you notice if your car has the IR glass?

Just fyi...when i put my radar detector on the winshield, I realized it wasnt working for ****...untill i put it into the 2 spots where there was no IR coating. Then it worked.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 09:59 PM.

story-0
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-1
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-2
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-3
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-4
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-5
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE