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THE INSTALLATION/CHECK-OUT SEQUENCE
The following steps are a general outline for the installation and checkout of the P-1000 Tachometers:
1 Verify that all tools and materials to complete the installation are available.
2 Locate the tachometer on the instrument panel and verify that there is a sufficient clearance for the P-1000 and attached cable behind the panel
when installed.
3 Locate the recommended circuit breaker installation on the electrical panel.
installation to the circuit breaker.
4 Locate the ignition switch on the electrical panel. Again verify that sufficient length of cable is available to reach from the P-1000 to the ignition
switch. The P-Lead wires should be routed away from any radio or other sensitive electronic equipment, and maintains proximity to grounded
panel structures. Maintain three inches clearance from any other electrical wiring.
5 Determine the routing of the cable from the P-1000 to the ignition switch and circuit breaker. Remember to leave adequate service loops and
properly strain relieves the cable ends.
6 Cut the power wires to proper length, strip 3/8" from the ends and attached the ring-tongue terminals supplied.
7 Verify that the main power switch is turned "OFF".
8 Attach the black wire to a suitable ground, preferably to a metal surface or supporting structure.
9 Install the circuit breaker. Turn on the main power switch and verify the operation of the circuit breaker. Turn off the main power switch. Note:
the circuit breaker should be installed on the main power buss, not the instrument power buss.
10 Attach the white wire to the circuit breaker load terminal.
11 Attach the circular connector to the P-1000. Be sure to screw the retaining ring all the way to the base of the mating P-1000 connector. Turn
on the main power switch and verify that the P-1000 turns on. The P-1000 will flash the tachometer's configuration number, which identifies
the tachometer for use with a specific aircraft/engine combination, and a software version code. The version code has a decimal point in it, the
configuration code does not.
12 Turn off the main power switch.
13 Attach the left and right P-Lead wires to the ignition switch. Be sure to make the proper left and right connections to the left and right magnetos.
Use the ring-tongue connectors wherever possible. DO NOT CUT OR SPLICE THESE CABLES. They contain shields to protect other instruments
in the aircraft from interference from ignition noise. If the shielded wires are too short, please contact Horizon Instruments, Inc. for a longer
cable. Be sure that no frayed wires are present, and that all screw connections are secure.
14 At this point, the P-1000 may be placed in a secure location prior to stating the engine.
HORIZON INSTRUMENTS, INC.
P-1000 INSTALLATION & INSTRUCTION MANUAL
Title:
Verify that the cable provided will reach from the P-1000
P103050
Number:
E
14 of 23
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