Back up camera Help!!

DylanJohnson · 03-07-2015, 08:01 PM

Hello fellow forum members. I have a 2010 328i with a JVC aftermarket receiver and have installed a back up camera, but one problem.. My camera doesn't switch on when I put the car into reverse?? How am I able to fix this? Any help would be greatly appreciated and if you need more information on the details please let me know! Thanks for the help guys!

Ali-E90 · 03-09-2015, 09:25 AM

Are you able to get the video feed from the camera manually by switching sources?

My guess is that you're missing the connection from your reverse trigger to the Pioneer (possibly taken from the reverse lights?).

constantin_md · 03-28-2015, 05:06 AM

on my e90 the feed to reverse bulb was 8v , not enough to trigger the reverse signal.
i bought a relay i think it was called absolute... 5 prong and a harness plug for it it, both for $6-7 shipped from amazon. the relay will make the 8v into 12v. You will also need to find a 12v for the relay, from an accessory or "on" key position wire (not from battery directly). I bought one of those tap a fuse cables and tapped into garage opener fuse.
the reverse bulb wire i think it was purple/black , not sure...
buy the relay and plug harness connect it to 12v and ground, connect the reverse bulb's wire 8v to relay , then the triggered 12v from relay to jvc.

bmw325i · 03-30-2015, 05:04 AM

You can wire the relay directly to the battery as long as you put a fuse close to the battery. The relay will only turn on if the car is in reverse.

You can even add a switch to turn on the camera when you're not in reverse using a couple of diodes.

jwzimm · 03-30-2015, 11:31 AM

The issue is that you are probably tapping off the reverse lights at the rear tail light. The length of the wire run from the FRM in the drivers footwell, back to the rear lights, and then forward again to the head unit results in a pretty large voltage drop. What I did was tap off the proper wire on the FRM wire harness. This resulted in a strong 12V signal that I could route directly to the head unit area.

bmw325i · 03-30-2015, 11:50 AM

Quote:

Originally Posted by jwzimm

The issue is that you are probably tapping off the reverse lights at the rear tail light. The length of the wire run from the FRM in the drivers footwell, back to the rear lights, and then forward again to the head unit results in a pretty large voltage drop. What I did was tap off the proper wire on the FRM wire harness. This resulted in a strong 12V signal that I could route directly to the head unit area.

The connects2 harness has a reverse wire that is controlled by the canbus. For anyone replacing a headunit especially one with nav that is the harness to use.

jwzimm · 03-30-2015, 12:10 PM

Quote:

Originally Posted by bmw325i

The connects2 harness has a reverse wire that is controlled by the canbus. For anyone replacing a headunit especially one with nav that is the harness to use.

One issue here, if the car is 6MT you are SOL. The reverse status is not available on the CANbus on a 6MT car since there is no TCU to provide the data. (ask me how I know

)

03-07-2015, 08:01 PM	#1
DylanJohnson Enlisted Member 3 Rep 31 Posts Drives: 2010 BMW 328i Join Date: Jan 2015 Location: Nashville, TN iTrader: (0)	Back up camera Help!! Hello fellow forum members. I have a 2010 328i with a JVC aftermarket receiver and have installed a back up camera, but one problem.. My camera doesn't switch on when I put the car into reverse?? How am I able to fix this? Any help would be greatly appreciated and if you need more information on the details please let me know! Thanks for the help guys!
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03-09-2015, 09:25 AM	#2
Ali-E90 Colonel 379 Rep 2,365 Posts Drives: 2007 E90 323i (Cdn) Join Date: May 2013 Location: Toronto, Canada iTrader: (3) Garage List 2008 BMW M3 [8.00] 2007 BMW 323i [8.50]	Are you able to get the video feed from the camera manually by switching sources? My guess is that you're missing the connection from your reverse trigger to the Pioneer (possibly taken from the reverse lights?).
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03-28-2015, 05:06 AM	#3
constantin_md Second Lieutenant 58 Rep 241 Posts Drives: 2014 F15 X5 sDrive35i Join Date: Jun 2013 Location: Bay Area, CA iTrader: (0)	on my e90 the feed to reverse bulb was 8v , not enough to trigger the reverse signal. i bought a relay i think it was called absolute... 5 prong and a harness plug for it it, both for $6-7 shipped from amazon. the relay will make the 8v into 12v. You will also need to find a 12v for the relay, from an accessory or "on" key position wire (not from battery directly). I bought one of those tap a fuse cables and tapped into garage opener fuse. the reverse bulb wire i think it was purple/black , not sure... buy the relay and plug harness connect it to 12v and ground, connect the reverse bulb's wire 8v to relay , then the triggered 12v from relay to jvc. Last edited by constantin_md; 03-28-2015 at 05:14 AM..
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03-30-2015, 05:04 AM	#4
bmw325i Major General 223 Rep 5,120 Posts Drives: 2006 BMW 325i Join Date: Oct 2010 Location: United States iTrader: (8)	You can wire the relay directly to the battery as long as you put a fuse close to the battery. The relay will only turn on if the car is in reverse. You can even add a switch to turn on the camera when you're not in reverse using a couple of diodes.
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03-30-2015, 11:31 AM	#5
jwzimm Colonel 687 Rep 2,770 Posts Drives: '16 M3 Join Date: Jun 2011 Location: Renton, WA iTrader: (17)	The issue is that you are probably tapping off the reverse lights at the rear tail light. The length of the wire run from the FRM in the drivers footwell, back to the rear lights, and then forward again to the head unit results in a pretty large voltage drop. What I did was tap off the proper wire on the FRM wire harness. This resulted in a strong 12V signal that I could route directly to the head unit area. __________________ 2008 Honda S2000 - Current 2016 F80 M3 - SOLD!! 2011 e92 X-Drive Coupe - SOLD!!
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