Quick disconnect connector

[RocketScott]

I'm not up on what connectors you guys have on your trucks. My '89 379/444xt uses Packard 56 (now Delphi 56) connectors inside and mostly Weather-Pack connectors outside. Some Metri-Pack connectors on things like the air dryer and speedo/tach sensors. The firewall pass through is a Metri-Pack header that uses three different sized pins

Here's a Delphi catalogue:

http://www.koehlke.com/pdf/Delphi/Delphi...atalog.pdf

It's over 400 pages long but pretty easy to narrow down to what you're working with. The numbers of the various connector series are usually the width of the pins. So the Metri-Pack 150, 280, 480, and 630 series have 1.5, 2.8, 4.8, and 6.8mm wide pins. Lots of things are color coded. The wire seals are coded by the wire size that they are meant to seal. If the connector body is a different color than what the catalog shows it's probably slightly different so it doesn't get plugged into the wrong thing

I'm not familiar with the Deutsch connectors. There are catalogs all over though. This one has an explanation of the part numbering in the first few pages:

https://www.dalroad.com/wp-content/uploa...-Guide.pdf

All the connectors have special tools to take them apart. Sometimes you can improvise but you risk breaking something. The tools are pretty cheap, and you probably only need two or three for every connector on your truck, so might as well get them. You can spend a fortune on crimpers if you buy the exact one that the manufacturer says you need for every different connector. I've found this to do most everything I need to do:

https://www.waytekwire.com/item/419/U-Ba...ping-Tool/

You're just trying to get the wire smashed evenly inside the terminal, takes a little practice but not too difficult. I solder everything in addition to crimping too. There are videos on youtube for how to do that. A good soldering iron and quality rosin core solder is all you need (wire brush to clean the tip helps)

Not sure what else might help. I'm not an electrician, but completely rewired my engine and hood harnesses a couple years ago. I've also done a lot of marine wiring on the boats I've crewed on