Jon Woellhaf wrote:
: Jay wrote, "Apparently the Piper master switch -- on the hot side only --
: "powers down" after 15 seconds! Some solenoid somewhere gets thrown,
: grounding the circuit and killing power to the hot side of the master
: switch."

: What?! I'd love to see a diagram of that circuit.

The Piper master switch does no such thing. The piper master switch supplies
GROUND to the master solenoid. Whne the switch is off, no current is flowing
through the solenoid windings, and the master switch appears to have +12V
battery connected to it - which it does - through the solenoid windings.
When you flip the master on, it grounds the wire from the solenoid that
previously appeared to have +12V battery on it. (Just like the dome light
switch on every car except for Fords.)

ASCII schematic:

(+ Battery)---(solenoid)-----(master switch)-----(- battery)

--
Aaron Coolidge