Re: What Size Crimp Connector Do I Need ...
I'm actually doing one in and three out - so I figured just connecting like I would with a wire nut would make the most sense.
If the Ideal connectors, referenced by hrdwrkingacguy, are good, I can get them at Home Depot.
Lots of different connectors/connections will work. Some of it is a matter of personal preference. For the boat, I buy all tinned connectors with build in heat shrink. Ancor or 3M. For your type of connection, you could go 2 in and 2 out and just loop one of the wires back and tie wrap it in place.
You could also use cap connectors, but I would get tinned ones and then seal with adhesive lined shrink wrap.
There are other ways you could do it. You could solder all 4 wires together and then shrink the bundle supporting as recommended by ABYC or you could use a bus bar.
Are these all power lines, all grounds, etc?