|
|
SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
Post Reply |
|
Thread Tools | Search this Thread |
04-13-2014, 02:42 PM | #1 |
Private First Class
15
Rep 144
Posts |
Hard wired radar detector question
Hey everyone
For those of you who have your detector hard wired using the add a fuse, what ground point did you use? Thanks!
__________________
2018 BMW M2
2018 Honda Clarity |
04-13-2014, 09:57 PM | #2 |
Captain
158
Rep 747
Posts |
This would depend on where you were mounting it, if you need some ideas for mounting locations you should post up where you have yours mounted currently or describe it in some detail.
You can splice into wires in the dome light as well as underneath the steering wheel or behind the stereo, not sure where you have yours hooked up currently. |
Appreciate
0
|
04-14-2014, 12:54 AM | #3 |
Second Lieutenant
22
Rep 219
Posts
Drives: 2007 BMW Z4 M Coupe
Join Date: Nov 2011
Location: Pacific Northwest
iTrader: (1)
Garage List 2000 Volve S70 se [0.00]
2000 Triumph Dayton ... [0.00] 2007 Husqvarna TE250 [0.00] 2002 Ducati Monster ... [0.00] 2007 BMW [0.00] |
I wired into the dome for both my escort Passport detector and old Uniden Beartracker BC10 scanner.
Grounded too a bolt found up there under the fixture (can't remember exactly where-sorry). Used purple/white stripe (comes on with key position 1) for the scanner... and green/white (comes on with key position 2) for the detector. |
Appreciate
0
|
04-14-2014, 01:05 AM | #4 |
First Lieutenant
28
Rep 392
Posts |
http://forums.bimmerforums.com/forum...nstall-for-Z4M
I followed this one and worked
__________________
2016 MK7 GTI PP LP DCC
2015 Macan Turbo Ordered!!! http://www.porsche-code.com/PF1XIUS5 ----------------------------------------------------------- Gone: 2007 Supercharged ESS VT-525 Z4MC |
Appreciate
0
|
04-14-2014, 09:33 PM | #5 |
Private First Class
15
Rep 144
Posts |
I ran the wire down to the fuse panel and tapped into fuse #49. I connected the ground to the first visible black screw but when I switch the key to the on position (without starting the engine) I get no power to the detector. It's a v1 detector. I saw all the instructions and videos on tapping into the map light but I'm trying to avoid splicing oem wires
__________________
2018 BMW M2
2018 Honda Clarity |
Appreciate
0
|
04-15-2014, 12:30 AM | #6 |
My other car is on Mars
639
Rep 3,124
Posts |
Did you check it with a voltmeter?
According to my fuse card, #49 is "Navigation,TV". According to the WDS, it's "terminal 30" power and should be present at all times. Is the black screw painted? Maybe you're not getting a good connection. I try to avoid running current through the chassis of the car. There should be a ground wire available. Most or all of them are solid brown.
__________________
Warning: May contain traces of nuts.
|
Appreciate
0
|
04-15-2014, 12:54 AM | #7 |
Colonel
1211
Rep 2,929
Posts
Drives: Anything
Join Date: Apr 2010
Location: SoCal
|
May I ask why this is not recommended? The chassis is your floating ground and should have the lowest impedance return for your source.
|
Appreciate
0
|
04-15-2014, 01:00 AM | #8 | |
Second Lieutenant
22
Rep 219
Posts
Drives: 2007 BMW Z4 M Coupe
Join Date: Nov 2011
Location: Pacific Northwest
iTrader: (1)
Garage List 2000 Volve S70 se [0.00]
2000 Triumph Dayton ... [0.00] 2007 Husqvarna TE250 [0.00] 2002 Ducati Monster ... [0.00] 2007 BMW [0.00] |
Quote:
Simple. Establishes a solid connection without too much alteration, and if I need to remove the wiring, just unplug & go. |
|
Appreciate
0
|
04-15-2014, 07:30 AM | #9 |
Mechanical Engineer
96
Rep 1,025
Posts |
There are plenty of unpainted structural screws in the glovebox area, just pick up one of those for your ground.
I had the passenger vent out yesterday, and discovered that there is an opening to pass your cable from the fusebox area into the open space in the dash below the vent really easily. From there you can pass it up into the A pillar, and have it exit into the top windshield trim or to the front of the dash, depending on where you want it. |
Appreciate
0
|
04-15-2014, 11:50 PM | #10 | |
My other car is on Mars
639
Rep 3,124
Posts |
Quote:
In short, it's just good Engineering practice. It'll probably work fine in this case, or the radar detector may pick up some alternator whine or spark plug pop, but maybe it won't care. It's not a high current load, so it doesn't need the lowest impedance ground, but it would like a low noise ground (actually "return" is the more proper term than ground). And I'm a NASA Engineer, with a specialty in high power radio transmitter design, so I get overly anal about my electrical work.
__________________
Warning: May contain traces of nuts.
|
|
Appreciate
0
|
04-16-2014, 02:19 PM | #11 |
Major
155
Rep 1,134
Posts
Drives: '07 M Roadster
Join Date: Dec 2011
Location: Warner Robins, GA
|
Can something like this be used to add power for a gopro?
__________________
|
Appreciate
0
|
04-16-2014, 08:13 PM | #12 | |
Private First Class
15
Rep 144
Posts |
Quote:
__________________
2018 BMW M2
2018 Honda Clarity |
|
Appreciate
0
|
04-17-2014, 07:22 AM | #13 |
Mechanical Engineer
96
Rep 1,025
Posts |
When you have that little shield at the back of the glove box flipped down so you can see into the fusebox area, there's at least a couple unpainted screws at visible towards the back of the car.
Painted screw will get you every time. |
Appreciate
0
|
04-21-2014, 08:46 PM | #14 |
Private First Class
15
Rep 144
Posts |
so i figured out the ground, but it seems that the fuse I chose is on all the time. Can I use spare slot #2? And does anyone know the amps in that slot?
__________________
2018 BMW M2
2018 Honda Clarity |
Appreciate
0
|
04-21-2014, 11:49 PM | #15 |
My other car is on Mars
639
Rep 3,124
Posts |
#49 is "Navigation,TV".
According to the WDS, it's "terminal 30" power and should be present at all times. #2 looks like a good choice. It's "terminal 15" power and is present in key positions 2 (run) and 3 (start). It's unused, just put in a fuse to suit. 1-2 amps should be plenty. For reference, here are the 3 power busses, and a fuse card: terminal 15.pdf terminal 30.pdf terminal R.pdf
__________________
Warning: May contain traces of nuts.
Last edited by StickMon; 04-22-2014 at 12:41 AM.. |
Appreciate
0
|
04-22-2014, 10:55 AM | #17 |
Major
388
Rep 1,008
Posts
Drives: 2007 Z4 M Coupe 2012 e93 M3
Join Date: Sep 2008
Location: Bay Area, CA
|
May I ask why you decided to go with this route (instead a simple tap o to the Dome Light source)?
|
Appreciate
0
|
04-22-2014, 11:56 AM | #18 |
Mechanical Engineer
96
Rep 1,025
Posts |
|
Appreciate
0
|
04-22-2014, 03:12 PM | #19 |
Private First Class
15
Rep 144
Posts |
I have the V1 hardwire kit (used on my old 135) and the add-a-fuse so I just decided to go this route instead of splicing into the wires
__________________
2018 BMW M2
2018 Honda Clarity |
Appreciate
0
|
04-22-2014, 03:37 PM | #20 | |
Major
388
Rep 1,008
Posts
Drives: 2007 Z4 M Coupe 2012 e93 M3
Join Date: Sep 2008
Location: Bay Area, CA
|
Quote:
By the way, I have asked this before haven't gotten any respond. Have anyone try V1 Connect Module with Smartphone App? |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|