Different power source for radar detector?

Dave · 02-11-2010, 02:49 PM

I installed Homelink yesterday and now I have a fun little issue: My radar detector doesn't come on til I press the garage door button.

Can anyone tell me a different switched power source I can use? Is it on the right one but maybe no longer fully connected?

wat3rbug · 02-11-2010, 02:52 PM

I had mine hooked up to the hot side for the homelink stuff. I should get the homelink so it comes on when I hit the button. It's better than having it completely unplugged to keep from chirping everytime I start the car.

Dave · 02-11-2010, 03:45 PM

Yeah, the chirping is annoying. I keep the volume all the way down in the city and just turn it up when I get on the highway. But I don't want to risk forgetting to turn it on some time. Plus of course this just isn't right. I feel like maybe I have it spliced off the wrong wire.

ILLuSioNz X · 02-11-2010, 04:48 PM

you could try and run it off of the sunroof power switch?

bcrouse1 · 02-11-2010, 07:24 PM

there are multiple power sources located in and around your car, the sunroof power supply, a power supply behind your glove box, the power supply to your cigarette adapter, the power supply in the center console along with your BMW pre-wired phone, etc. i think that drawing power for multiple projects off of one power line could be causing it to fail. there is something else i heard around here... maybe a noise filter or something along those lines .. search around, the answer lies in the forums.

02-11-2010, 02:49 PM	#1
Dave Moderator Join Date: Dec 1969 Location: Chicago Posts: 2,056 My Ride: 323,330,M3,M3,M3 View My Garage	Different power source for radar detector? I installed Homelink yesterday and now I have a fun little issue: My radar detector doesn't come on til I press the garage door button. Can anyone tell me a different switched power source I can use? Is it on the right one but maybe no longer fully connected? __________________ Perhaps you think multi-million dollar ad campaigns make a beer taste better. Perhaps you're mouthing your words as you read this.

02-11-2010, 02:52 PM	#2
wat3rbug Registered User Join Date: Nov 2007 Location: Houston Posts: 760 My Ride: 2002 BMW 325 xi View My Garage	I had mine hooked up to the hot side for the homelink stuff. I should get the homelink so it comes on when I hit the button. It's better than having it completely unplugged to keep from chirping everytime I start the car. __________________

02-11-2010, 03:45 PM	#3
Dave Moderator Join Date: Dec 1969 Location: Chicago Posts: 2,056 My Ride: 323,330,M3,M3,M3 View My Garage	Yeah, the chirping is annoying. I keep the volume all the way down in the city and just turn it up when I get on the highway. But I don't want to risk forgetting to turn it on some time. Plus of course this just isn't right. I feel like maybe I have it spliced off the wrong wire. __________________ Perhaps you think multi-million dollar ad campaigns make a beer taste better. Perhaps you're mouthing your words as you read this.

02-11-2010, 04:48 PM	#4
ILLuSioNz X Registered User Join Date: Sep 2009 Location: All Over NJ... Posts: 634 My Ride: 03 TiAg E46 M3 Coupe View My Garage	you could try and run it off of the sunroof power switch? __________________ -Chauncey 2003 E46 M3 COUPE Misc. OEM E46 M3 Steering Wheel Parts

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02-11-2010, 07:24 PM	#5
bcrouse1 Registered User Join Date: Feb 2008 Location: San Francisco, CA Posts: 30 My Ride: 2004 330 CI View My Garage	there are multiple power sources located in and around your car, the sunroof power supply, a power supply behind your glove box, the power supply to your cigarette adapter, the power supply in the center console along with your BMW pre-wired phone, etc. i think that drawing power for multiple projects off of one power line could be causing it to fail. there is something else i heard around here... maybe a noise filter or something along those lines .. search around, the answer lies in the forums.