I bought the $6 bubbler from the WL959 quad and did some experimenting to put it on my p2v+. The wires are yellow and red. Yellow is positive. It works great on 4.8 volts. I have a separate nano receiver and transmitter. The bubbler will be switched on with a picoswitch from dimension engineering. And once I figure out how to package it all and attach it I'll be adding their rocket launcher and a servo to drop objects! Fun ****.