I hooked up the two wires needed for a ground connection for the P-Mags. This was the last thing I needed to do to make the wire connections for the magnetos. I used ferrules on the wires to prevent vibration from breaking the wires at the connector. I left some service loop in the wire because I want to add a serial line in the future which will allow me to customize the timing of the magnetos with a laptop. For the test period and engine brake in it is recommended to use the factory default timing.
The P-Mags adjusts the timing based on RPM and manifold pressure. The P-Mags have a barb fitting for the tubes that tie into the plumbing that feed the manifold pressure gauge. I started to hook up this plumbing but called it a day before I was done.