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Ray, I finally located the location of short in my RV-12's AP circuit.  The RV 12 has about 12 wiring harness bundles connected through a master connection box.  I tested each each bundle, one at a time until I fond the one killing the AP circuit's fuse.  Then I examined that bundle's 31 pin D...

Ray, I disconnected the connectors going into both servos. The fuse still blows when I turn on the autopilot system. It seems likely that I have a short or incorrectly wired connector pin behind the instrument panel. That may prove to be a tough to find because it may require some harness...

Thanks Ray, I'll check for shorts to ground if the wires are all routed as shown in the builder plans. Jim I REALLY don't want to have to disassemble connectors behind instrument panel to check pin assignments!!

Sv 32 circuit fuse blew when first powered up in R I just powered up my Dynon Skyview in a Vans RV-12 that I am almost finished building. The auto pilot circuit fuse blew immediately. I just checked all the wires in/out of the roll servo and to ground and all were connected correctly. I'll...