Not worth a darn in a vibrating trailer. The spring will work its way through the wire and lose contact.
Wire nuts are bad enough. I use only crimp connections made with a ratcheting tool. They stay put.
I had a few home fixtures with these in them. Tossed and used real wire nuts. I also never back wire outlets and switches. Wire goes under the screws...
Yep. Old fashioned but proven to work better.
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'The Silver HamShack' (2007 International 22FB CCD 75th Aniversary model)
Multiple Yaesu Radios inside and many antennae sprouting from roof, ProPride hitch
2012 shortbed crewcab 4x4 Toyota Taco TV with more antennae on it