Brief Description: Started testing elctrical circuits
Started testing elctrical circuits. I put a Faston connector in the end of two wires and then attached a 5 Amp fuse. This test wire with the inline fuse had a crimped male pin suitable for insertion into the plugs of the Vertical Power Control Unit. I tested the SL-40 Com #2 Power first. What a great sight to see those lights come on! Next, the G430W Nav Power lit up the display. Then the 10A Fused Power Panel attached to the forward side Avionics Access Door showed power. Power was applied to the #1 GRT EFIS and it lit up the display but it failed to recognize the AHRS! Dratz! The same thing happened to the #2 EFIS! Dratz! Dratz!
I pulled out the GRT wiring info for the AHRSs and it showed it having a aircraft power wire and ground to the airframe that were both missing. I had erroneously thought that the wiring of the AHRSs with the wires of the FastStack cables was all that was needed to complete the wiring of the AHRSs. I combined a AHRS power wire with the EFIS power wire for each of the EFISs at the Avionics Power Terminal. This way, the AHRS for each EFIS will power up from their corresponding EFIS's power source. The power pins were placed in their AHRS's connector and a ground wire was ran from each to the Avionics Grounding Hub.
Power was again applied to #1 EFIS. Dratz! Again the same message! AHRS Unseen. Same with #2 EFIS. Time for some help. I sent a message to Tim Haas, the cable guy, and to Carlos at GRT.
