Not my preference. I use simple Molex-type self locking connectors. For powering 2 devices from a single run, get a 2-way. From source to one pin, jumper to other side of the same connector. On the mating connector, run 1 separate line to each of the 2 locations.
For the coil jumper, I use a ring terminal and wind the jumper lead to the end of the wire for crimping inside the ring terminal. You only need 18AWG wire here, so you can use a 16AWG ring for the doubled wire, a proper 18 for the jumpered lead to the opposite coil.