Jump to content

Turn indicator circuit tap

FredFishface

Recommended Posts

FredFishface New Member

FredFishface

Posted
Posted

Hi, I'm installing two side view cameras on my 2017 3500 duramax. I require a trigger from my left and right indicator circuits and was wondering where to tap in to the existing circuitry. The BCM (body control module) has two inputs (pin 12 X3, pin 24 X3) that appear to be relevant. Can I simply tap into each of these or is there a better place? Am I correct in understanding that the turn signals from the S78 switch pull the BCM inputs low (e.g., they apply ground to the BCM) in which case the trigger will be low as opposed to high? Is it 12v when the turn signal is not active? Thanks in advance. 

pgamboa Senior Enthusiast

pgamboa

Posted
Posted

Do you have tow mirrors with the turn signal in them? If not, maybe you can run can just run from the mirror to the door jamb?

6a3556f474509ad8f87bc2226dbe7b2e.jpg


Sent from my iPhone using Tapatalk

redwngr Senior Enthusiast

redwngr

Posted
Posted

Do the wiring diagrams show how it's done with the 'intellihaul' kit GM sells?

kf9yr Enthusiast

kf9yr

Posted
Posted

I have the Rostra version with the two mirror cameras, front grill camera and wireless trailer camera (you choose which rear view camera in a menu).

Sine the Rostra and the Intellihaul systems are integrated with the in dash Nav radio they utilize the factory plugs with a new male and female connection.

They don’t read a voltage on the turn signal circuit, they monitor the vehicle computer communication and switch the cameras based on that. I know there are different software versions needed for Chevy Vs GMC as I was sent a Chevy version by mistake which didn’t work correctly until the GMC version was installed.




Sent from my iPad using Tapatalk Pro

Chfc2 Enthusiast

Chfc2

Posted
Posted

Hi kf9yr how do you like the Rostra system I’m thinking of getting one . I wanted to use the Intelihaul mirror cameras so I didn’t have to drill but can’t find where to buy them separate. I also want the wireless trailer camera and front . Did you install your self ?was it hard?

kf9yr Enthusiast

kf9yr

Posted
Posted

I really like the system. I did a write-up on the Silverado-Sierra forum about doing the install myself.

 

Short version; it wasn’t that hard following the directions combined with the YouTube video.

 

 

Sent from my iPad using Tapatalk Pro

 

kf9yr Enthusiast

kf9yr

Posted
Posted
so for the screen mirroring you need a hdmi to lightning connector with an i phone correct?


Yes


Sent from my iPad using Tapatalk Pro
paauto Enthusiast

paauto

Posted
Posted
On 3/23/2018 at 9:24 PM, Chfc2 said:

Hi kf9yr how do you like the Rostra system I’m thinking of getting one . I wanted to use the Intelihaul mirror cameras so I didn’t have to drill but can’t find where to buy them separate. I also want the wireless trailer camera and front . Did you install your self ?was it hard?

I installed the Intellihaul mirror cameras and also a wired front camera.  Took a bit of time, but nothing crazy.  Bought the system off the GM parts site.  You need to remove both mirrors and door cards and also disconnect the rubber wire conduit from the door to the body.  I installed my front cam in the license plate filler plate (no front plates in PA).  That required some modification (cutting it and gluing in from the rear).  

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • richard wysong
      Electrical Problem - solved

      By richard wysong · Posted

      Thanks for posting, I'm sure it will help someone
    • Brendan C
      2026 6.6 L5P oil cooler leaking oil at 4,000 miles

      By Brendan C · Posted

      New to diesel trucks. I happened to find my oil cooler leaking oil externally with only 4,000 miles on the truck. I didn’t realize this was an issue until I started researching it. Dealer is going to replace it under warranty but I’m wondering if there’s anything GM is working on to fix this issue. I’ve heard the oil filter used is the same as they use on their V6 motors and that’s what is causing the problems. Should I switch to a bigger filter or keep using the OEM recommended? 
    • Vu1can
      Seems to be Missing a lot of Updates

      By Vu1can · Posted

      So, GMCustomerService:  Judging by the Update History pictured above, is this truck missing any updates that it actually needs. If it's just for the infotainment system, the radio is working fine and no trouble with SeriusXM. and Android Auto is working fine wirelessly with my phone. Some months ago, an update notice was sent to my truck. I approved the update and it finished saying that the update was successful, but it seems that whatever that update was, it didn't actually get installed - at least not if I'm to go by the Update History shown above.   So, again, are there any updates that this truck really should have? I've checked with my dealer but they're reluctant or commit to anything and if I want them to check, they require a $200.00 fee just to check it out and then I'd have to pay for the actual update(s).    Ignorance is bliss, and if none of the updates goes to fixing any mechanical discrepancies, I'll just leave things as is.  
    • CNH-320
      Electrical Problem - solved

      By CNH-320 · Posted

      Hey everyone, I recently had an issue with my 07 2500HD GMT900. My DRL’s stay on at all times. Right front turn and right mirror turn signal indicator stay on solid at all times. By “at all times” I mean the only way to make them go off is disconnecting the battery. I tore the headlight assemblies out, tried disconnecting the harnesses to eliminate bad wiring at the harness, I unplugged the headlight switch, no change and the mirror turn signal still stayed on. My first thoughts were : Bad bulb and/or socket somewhere, under hood fuse panel bad, bcm bad, tail light or trailer wiring problem, or some random short to power in the harness.  Possibly a bad ground but unlikely. I had a big clue in the fuse panel, it had a burnt smell. I started pulling every fuse that had to do with DRL or right turn/park lamp. Nothing made the right directional turn off but pulling the DRL2 fuse made the DRL’s go out.  After studying wiring diagrams, I found that both problems had that fuse panel in common, the bcm also controls both problems but knowing the fuse panel had a burnt smell I removed and disassembled the fuse panel and found a little corrosion on the printed circuit board.  I ordered a new fuse panel from Amazon for like $260. When it arrived I installed it, and put everything back together, the problem was fixed. I figured the fuse panel needed to be replaced anyway so that was a logical place to start. Hopefully this story helps someone in the future. Regretfully I didn’t scan for codes before I did everything.
    • 2022LtTbZ71
      Service 4wd, ESC light, traction control light on, Service charging system (vehicle may stall)

      By 2022LtTbZ71 · Posted

      That stinks. I’m sitting on the side of the road right now with the same issue. Never had an issue before taking it in for the ground strap recall. Now I’m outside of warranty and they’ll probably want $200 just to diagnose what they already “fixed”. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...