You can get sockets for those. Like this one: https://www.amazon.com/Lisle-13250-Pressure-Switch-Socket/dp/B0002SR2RY Not sure what size yours is. I had to get one for my son's 72 Skylark because it was fighting me.
Different years, the ball moved. My 83 is one side, 84 is other. I think the other nipple is on the bottom of the ballYes that is the ball I was talking about. I was expecting it to be on the other side. I see only 1 nipple, so the capped nipple on check valve will connect to the ball.
The switch needs a special socket, I can sometimes get them with an open end wrench. If this one is giving you grief, get the socket.
The wiring insulation is not a huge concern. Clean it up, with brake clean or electrical contact cleaner, and tape it up with some good black electric tape, 3M would be my go to.
Sometimes taking a slow measure assessment is the best path. I wouldn't worry to much about the OEM vacuum routing. You need vacuum advance for distributor, the HVAC vacuum, minimum. The egr well not till you need to meet smog inspection requirements.
Having a working vapor canister is nice, helps with the gas fumes.
Be careful with that junction block. There are lots of stories of people breaking off the fitting from the head. I have good luck using channel-locks on sensors like that.Both the sender connector and the other electrical connector have exposed wire.
I tried getting the oil pressure switch out as well, but this damn thing won't come out. The switch and the oil pressure sender both screwed into a single junction block. Here is a photo of the junction block and the switch that won't come out:
I am kinda thinking that I'll replace the switch, the sender, and the connectors that go to both of them. Hopefully I'll have another update later this week.
F***Be careful with that junction block. There are lots of stories of people breaking off the fitting from the head.
Thank you Ron!!If it does not come out easy on the first or second try I can try to stop by this weekend and try to help. That brass is soft so an easy out should grab it good. An easy out will have the tendency to push out on the brass, almost making it tighter, patience and finesse are your friend.
In other words, try not to make it worse then it already is.If it does not come out easy on the first or second try I can try to stop by this weekend and try to help

I should really read before responding.Yeah - the part of the junction block that screws into the block broke off in the block.
What’s the cost of the sensor? $30-40? The brass tee is $3 from Home Depot. I say cut the brass tee off with a dremel and if you nick the sensor then buy a new one. I refuse to argue with stuff like this.
the part of the junction block that screws into the block broke off in the block.