side view camera
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=128006
Printed Date: September 10, 2025 at 10:10 AM
Topic: side view camera
Posted By: cafowler
Subject: side view camera
Date Posted: July 22, 2011 at 12:40 AM
I am installing a 3 camera switcher with rear and side cameras. While I can individually confirm everything is working by applying power to the triggers.. I am having trouble with the side view triggers. (turn signals). When the vehicle is completely off my turn signals rest at a constant 4V and have a zero volt reading when activated. With the vehicle in the on/acc position my turn signals rest at 13v and have a zero volt reading when activated. I am assuming I need to reverse polarity so that the turn signals will activate the cameras but I need a wiring diagram or help with this. Thank you!
Replies:
Posted By: howie ll
Date Posted: July 23, 2011 at 11:43 AM
Something is wrong here, they should be zero at rest and 12V+ (nominal) on working. Any way if you're correct you will need this camera.bmp------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: Ween
Date Posted: July 23, 2011 at 8:37 PM
I'm thinking the trigger for the cameras are being accessed at the turn signal switch wires, not the bulbs or dash indicators. I know Ford has ground inputs to their SJB, the SJB performing the output control.
Mark
Posted By: cafowler
Date Posted: July 23, 2011 at 8:52 PM
Thank you for your replies! I have figured this one out for the most part. I installed this on an International truck that's been highly modified. The electronics are all being run off the ISIS Power Multiplexing system. Which I cannot say enough GREAT things about and HIGHLY recommend! I reversed the polarity with one relay from the turn signal output to the camera switch for all cameras.. The only puzzling thing here is when I turn on my turn signals (and the cameras activate perfectly) my rear reverse lights illuminate as well.. :-/
Posted By: howie ll
Date Posted: July 24, 2011 at 1:48 AM
Diode in line with lead to 85, band away from relay?
Ween you are so right, I was thinking Ford when I so categorically denied a neg feed then I remembered working on an S Type Jag (A.K.A. town Car) where a bulb in the r/hand rear light cluster wasn't working. I immediately came out with "bad ground". It was of course a bad 12V+ power supply.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
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