Interesting... I have the ground side of my mag switch wired to airframe ground near the firewall and the p-lead shield grounded at the mag case only (which is what Van's wiring diagram shows). What's the benefit of having the mag switch ground run through the shield and back to the mag case, as shown in the diagram from earlier in this thread?
RV-10, Flying as of March 2011 (blog
Paine Field (KPAE)
EAA Chapter 1440