I am trying to take off a sun visor. The electrical connector is hidden up inside the front headliner panel.
I did manage to pry the headliner down to get enough slack so the connector is just barely sticking out of the headliner.

Most all of the electric connectors have a little red lock tab. OK Great pull out the lock.
NOW WHAT? Every connector is different and has a different release lever or tab.
It is not unusual to spend half an hour trying to find where to squeeze, push, or pry to undo the connector.
I don't want to break the connector lock tab but that happens sometimes too.

I see in the service manual there is all kinds of information on how to splice wires and how to find vibrations etc.
Is there any information on how to unlock, electric connectors. It seems each one is different and has its own combination.
Each one is a mystery. Where or how do I find the magic unlock before I spend hours prying.

Picture is the connectors for the overhead switch panel. Red locks on some connectors.
After you unlock the connection, quite often you can see how the latch or release works. How do you find that before you start the project?

 

I'm glad I'm not alone. They should be standardized or charted. I've spent more time releasing connectors than the rest of the project.

 

Makes you wonder why the entire industry isn't standardized, not just GM. We've managed to do it with PC connectors.

 

If they standardized connectors there would be too much interchangeability between manufacturers resulting in a loss of replacement part sales.

 

Almost like that would jive with consumer rights and fight against techno-feudalism and the ongoing war against right-to-repair....

 

See around 2:30, not sure if this is what you're looking at though.

 

That’s the type of instructions I need. Just squeeze it? Squeeze where? That is always the question.
That is what I need for every connector on the car.
Like 23cpe3lt said "I spend more time on the connectors than the rest" Isn't that the truth.
The red lock tab is easy, but the next step to release the connector is the really difficult part, always.

 

I have a 2024 RAM 3500 that I use for hauling my truck camper. I remove and reinstall the tailgate several times a year. They have instructions and a video on how to remove the tailgate which includes disconnecting the connectors. However there is a pair of wires on my truck that isn't covered in the video, has a different connector that operates differently, and the harness isn't long enough for it to extend through the small access hole. I struggled with it every time I removed the tailgate and the last time the wires broke off at the connector. Even if I wanted to pay for a replacement harness (the proben wires are on the truck side) I would have the same access problem on the new harness. And, of course, I couldn't find instructions on how to depin the connector so I mangled it splicing in new wires. I called the dealership to see if they have a repair pigtail for that connector but they can't find that harness configuration in their parts drawings. They said I'd need to bring it in to see if they can figure out what is going on. Or I could splice in a generic set of connectors but I hate cutting into the otherwise good harness on the tailgate of a relatively new truck. All for a friggin connector that isn't standardized.

 

 

Perfect. That is exactly what I need for the other 999 connectors on the car also.
What really throws you off, is that little white tab.

 

No surprise there. Sounds like you don't have much choice other than to make your own harness.
On Freightliner Trucks it was common to have a "Service Loop" in the wiring harness that gave you some slack so you could get access to the connectors and components.
That was 10 years ago. With the price of copper wire these days and the extra weight, the service loop is a thing of the past.
On the C8 there is absolutely no extra wire. Only enough wire to plug in the connector, no extra length to make it easy.

 

2 connectors inside the front headliner. Before you can take the front headliner panel out of the car, you need to unplug both connectors.

Really difficult to get it apart if you don't know what to look for.
There are 4 locks total. Top picture; male plug. The red tab is the first lock. Right at the end of the red tab is a ramp-hook, that is the main lock.

Easy right? We can't release that ramp yet. In the bottom picture, on each the side, X marks the spot, there is a lock tab on each side that you have to pry out.
How would you ever know this until you have it apart. Yes, that is a band aid on my finger. Blood, sweat, and now beers .

#1 Pull the red tab, pry out lock #2, #3 on each side, #4 press the white plastic near the end of the red tab. Pull the connector apart.
Do we really need 4 locks on this connector.

 

The modern connectors are a pain in the ***. There is zero reason for the locks. Every time I disconnect one I remove the lock from it, most will pull out or you can just break them. Then the connector will just come off like normal by pushing the tabs.

 

Exactly. Why do we need 4 locks on a connector?
I am not putting the red tab back in. It is a lock for the lock.
The 2 side locks were bent so far out of shape they may not work again.
No worries, the ramp-hook on the top will hold it.

Maybe they design this with 4 locks because they know you will break 3 when you take it apart.
I miss the old days when all connectors had one lock on the top with a big obvious lift tab.
Now we have three mysterious locks and a red lock tab lock.