7 pin and Furion camera

Thank you all for responding, I am reviving this post to share the solution for those that may be struggling with the same issue.
If you are I am guessing you have a shiny new GM truck. It has developed as a known issue on there advanced trailering package.
Here is a link of the issue from another forum and the work arounds that people have applied.

https://www.forestriverforums.com/forums/f68/furrion-vision-s-4-3-camera-with-2021-chevy-high-country-2500hd-225548-2.html

I know it seems I'm focusing on the details rather than giving answers. But I have spent the last 20 years as the final point of escalation for a tech company. I'm still amazed to this day how sometimes a problem bounces around for weeks and finally gets to me and I find that two guys are collaborating on troubleshooting an issue and looking at two different parts diagrams.
In the picture below is the blade 3 and 4 the ones you mentioned in your original post? Pay special attention to numbers as related to the rectangle locator pin at the top as I've seen many pictures with the rectangle at the bottom or numbered clockwise or counterclockwise. (Truck side is the bottom picture)


If your 3 and 4 are different then what numbers in the above diagram correlate to your 3 and 4?

adamendi wrote:
won't work when connected to the 7 pin on my new truck.

You mentioned it doesn't work when connected to your new truck. Does that mean it worked on your previous truck but now doesn't work on your new truck? If so the problem is going to be on the truck side.

Do you have a 12 volt test light or a multimeter? It's okay if you have a meter and don't know how to use it. Give us the brand and model and we can look it up and walk you through it. I admit I prefer a multimeter. But for this test a simple test light with an actual bulb, not an LED would probably work better.
Amazon

Camera power is provided through the trailer light circuit.

Thanks for the replies everyone, Ill keep chasing this down and post the solution when I find it.

If the trailer lights are on, then the truck is not the issue.
Your signal could be too weak.

opnspaces wrote:
Yes it sounds like your truck is not providing any power down the 12v line. Typically that line is dead like fused but no fuse in the holder from the factory. So you're going to have to find where the fuse is supposed to go and either put a fuse in or replace the burnt fuse.

What's the make model and year of the truck? We can probably tell you where the fuse is if you need help finding it.

It's a 2022 silverado 3500 diesel. Thanks for the help. The RV community is second to none

Yes it sounds like your truck is not providing any power down the 12v line. Typically that line is dead like fused but no fuse in the holder from the factory. So you're going to have to find where the fuse is supposed to go and either put a fuse in or replace the burnt fuse.

What's the make model and year of the truck? We can probably tell you where the fuse is if you need help finding it.

opnspaces wrote:
Assuming you are talking about a camera on a trailer or a 5th wheel.
And assuming you're saying the camera works when you jump pins 3 and 4 on the Umbilical of the trailer. Then your truck is not providing power at the 7 pin. As Cptnvideo suggests try plugging in to the 7 pin and turning on the truck lights.

Your correct on the assumptions, I have turned on the manual lights to on and still no dice, it's become frustrating and led me to believe its in the truck connection trying to cover all my bases here.
Thanks for the response.

opnspaces wrote:
Do the trailer side lights come on when you turn on the truck headlights?

Is the trailer hitched to the truck? If not hitched you might have a grounding problem. The ground should go through the 7 pin. But for some reason some people seem to think that ground is not necessary and let it ground through the hitch.

Truck lights are on. And running lights on the trailer do turn on. That's why it was so weird to see that it works jumping 3 and 4 while connected to shore power and not when connected to truck.
Sorry,and yes I was hitched up and no dice.

Do the trailer side lights come on when you turn on the truck headlights?

Is the trailer hitched to the truck? If not hitched you might have a grounding problem. The ground should go through the 7 pin. But for some reason some people seem to think that ground is not necessary and let it ground through the hitch.