One way of checking for intermittent opens in signal or power wires is to use a load light at t

       https://rotate.aero/forum/767-36pnuematics/751-prv-exit-pressure-sensor

  https://rotate.aero/forum/767-28fuel/752-apu-dc-fuel-pump#1863

Right GPS not able to receive satellite information. On this aircraft the right antenna is forward m

https://rotate.aero/forum/troubleshooting-tips-general/516-airspeed-to-psi-conversion#1853