What fuse bank to use for radar hardwire?

cipher5 · 11-28-2008, 09:01 PM

I originally used bank 63 (Homelink) per e90post to hardwire my Escort 8500 X50 in my M3. But in doing so the car threw a code on EDC Failure and Comfort Access stopped working. After I removed the tap everything returned to normal. Any suggestions? I have an E92 M3. Thanks!

Keto · 11-29-2008, 11:46 AM

There is another homelink fuse listed on the card in your fusebox that works fine. I have my V1 tapped with no problems. I think it was 7, but I'd have to check.

cipher5 · 11-29-2008, 12:43 PM

I believe that is Homelink/PDC, I'll give it a try. Thanks Keto!

doba_s · 11-30-2008, 06:53 PM

the easiest way is to use the green/white wire ... no codes and no need to run it all the way into your fuse box ... 10min DIY.

TLud · 11-30-2008, 07:29 PM

No need to use a fuse slot that's already occupied. Just tap into a blank slot with ignition power. I believe I used slot 5.

aus · 12-29-2009, 12:23 AM

Did anyone use a large fuse tap on a 2008 E92? TLud mentioned #5, but on my car the large fuses don't start until #30 or #31.
A lot of the fuse don't seem to be on either since I got no power on a bunch. I did find one that worked, but it's not switched, but does eventually turn off when locked.

doba_s · 12-29-2009, 12:28 AM

use a small fuse add-a-circuit and use ( #5 or #7 )

aus · 12-29-2009, 12:57 AM

That would mean I'd have to ship it all back to PartsExpress. Which I suppose I could do, but I was hoping for someone who was able to find a large fuse that would work. Thanks.

firewired · 12-29-2009, 01:57 AM

tried to use the same thing from parts express as mentioned in the other thread. Couldn't get it to work with the larger fuse, so ended up using the homelink one.

tom @ eas · 12-29-2009, 02:00 AM

Quote:

Originally Posted by doba_s

the easiest way is to use the green/white wire ... no codes and no need to run it all the way into your fuse box ... 10min DIY.

+1. Green/White wire works every time.

WCH · 12-29-2009, 09:11 AM

As Doba_S mentioned, #5 and #7 are both switched but you need to use a mini-fuse tap.

doba_s · 12-29-2009, 10:09 AM

Quote:

Originally Posted by aus

That would mean I'd have to ship it all back to PartsExpress. Which I suppose I could do, but I was hoping for someone who was able to find a large fuse that would work. Thanks.

any Kragen or Autozone have them in stock

JCtx · 12-29-2009, 02:33 PM

Quote:

Originally Posted by TLud

No need to use a fuse slot that's already occupied. Just tap into a blank slot with ignition power.

I always try to do that too, especially with CanBUS systems that you never know what else they're interconnected with.

Quote:

Originally Posted by doba_s

the easiest way is to use the green/white wire ... no codes and no need to run it all the way into your fuse box ... 10min DIY.

I also tapped on that wire (on upper console), but keep in mind power is interrupted with an open sunroof (if so equipped). Not an issue with me since I use my radar detector just on the highway with sunroof closed, but when I was testing I had it open, and had to unnecessarily check my wiring because it wasn't working

. Before tearing the whole thing down for the third time, closed the sunroof and the V1 came alive. Geez

. Now you folks know. Good day.

aus · 12-29-2009, 05:07 PM

Quote:

Originally Posted by doba_s

any Kragen or Autozone have them in stock

Thanks. Didn't know that.

TLud · 12-29-2009, 11:10 PM

Quote:

Originally Posted by aus

Thanks. Didn't know that.

If you can't find one, I can mail you an extra one I have laying around the house.

Blue Liquid · 05-08-2010, 12:56 PM

I used the green fuse (20) which is for the cig lighters. It's the same as plugging the radar detector into the cig. lighter itself. Turns off with ignition and won't drain your battery. Did the same on my brother's E90 M3.

11-28-2008, 09:01 PM	#1
cipher5 506 Rep 3,469 Posts Drives: 2020 Donington Grey X3M Comp Join Date: Jul 2007 Location: Chicago, IL iTrader: (12)	What fuse bank to use for radar hardwire? I originally used bank 63 (Homelink) per e90post to hardwire my Escort 8500 X50 in my M3. But in doing so the car threw a code on EDC Failure and Comfort Access stopped working. After I removed the tap everything returned to normal. Any suggestions? I have an E92 M3. Thanks!
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11-29-2008, 11:46 AM	#2
Keto Lieutenant Colonel 73 Rep 1,603 Posts Drives: F80 M3 Join Date: Jul 2007 Location: WHO DAT NATION iTrader: (1) Garage List 2015 BMW M3 [10.00]	There is another homelink fuse listed on the card in your fusebox that works fine. I have my V1 tapped with no problems. I think it was 7, but I'd have to check. __________________ 2015 SO/SO MT M3 :: Exec : Lighting : Adaptive : HK : CF trim : Full leather : DAP : Black 19's : sunshade Crystalline tint 40%/70% on windshield : M performance mirrors, spoiler, splitters : Status Gruppe CF lip : RKP diffuser : Fully dechromed Bavsound Stage 1 : V1 Savvy hardwired : Self-coded
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11-30-2008, 06:53 PM	#4
doba_s Major General 405 Rep 6,107 Posts Drives: X7 l Cayenne l 997.2RS Join Date: Sep 2006 Location: Danville iTrader: (26)	the easiest way is to use the green/white wire ... no codes and no need to run it all the way into your fuse box ... 10min DIY.
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11-30-2008, 07:29 PM	#5
TLud Colonel 108 Rep 2,279 Posts Drives: '12 Golf R Join Date: Jun 2008 Location: Texas iTrader: (3)	No need to use a fuse slot that's already occupied. Just tap into a blank slot with ignition power. I believe I used slot 5. __________________ '09 Interlagos Blue E92 M3 (sold to a good home)
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12-29-2009, 12:23 AM	#6
aus Major General 892 Rep 9,032 Posts Drives: Odysse Join Date: Jul 2005 Location: Seal Beach, CA iTrader: (10)	Did anyone use a large fuse tap on a 2008 E92? TLud mentioned #5, but on my car the large fuses don't start until #30 or #31. A lot of the fuse don't seem to be on either since I got no power on a bunch. I did find one that worked, but it's not switched, but does eventually turn off when locked. __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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11-29-2008, 12:43 PM	#3
cipher5 506 Rep 3,469 Posts Drives: 2020 Donington Grey X3M Comp Join Date: Jul 2007 Location: Chicago, IL iTrader: (12)	I believe that is Homelink/PDC, I'll give it a try. Thanks Keto!
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12-29-2009, 12:28 AM	#7
doba_s Major General 405 Rep 6,107 Posts Drives: X7 l Cayenne l 997.2RS Join Date: Sep 2006 Location: Danville iTrader: (26)	use a small fuse add-a-circuit and use ( #5 or #7 )
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12-29-2009, 12:57 AM	#8
aus Major General 892 Rep 9,032 Posts Drives: Odysse Join Date: Jul 2005 Location: Seal Beach, CA iTrader: (10)	That would mean I'd have to ship it all back to PartsExpress. Which I suppose I could do, but I was hoping for someone who was able to find a large fuse that would work. Thanks. __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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12-29-2009, 01:57 AM	#9
firewired Private First Class 22 Rep 174 Posts Drives: 2010 M3 Sdn Join Date: Nov 2005 Location: San Antonio iTrader: (0)	tried to use the same thing from parts express as mentioned in the other thread. Couldn't get it to work with the larger fuse, so ended up using the homelink one.
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12-29-2009, 09:11 AM	#11
WCH Lieutenant Colonel 347 Rep 1,844 Posts Drives: '20 M8C convertible Join Date: Nov 2006 Location: Boston iTrader: (8) Garage List 2022 Porsche Cayenn ... [0.00] 2020 BMW M8C [0.00] 2017 Porsche Macan GTS [0.00]	As Doba_S mentioned, #5 and #7 are both switched but you need to use a mini-fuse tap.
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05-08-2010, 12:56 PM	#16
Blue Liquid First Lieutenant 18 Rep 363 Posts Drives: Silverstone F80 Join Date: Apr 2010 Location: NJ iTrader: (0)	I used the green fuse (20) which is for the cig lighters. It's the same as plugging the radar detector into the cig. lighter itself. Turns off with ignition and won't drain your battery. Did the same on my brother's E90 M3.
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