Removal Of Mechanical Tachometer; Instruments Mounting - Horizon Fitness P-1000 Installation Instructions Manual

Caution should be taken when handling the connections to the magnetos. Magnetos can generate several hundred volts on their P-Leads
that can provide sever shock hazard to the installer.
P-Leads wires should not be bundled with sensitive radio/communication/navigation instrument wires. Magnetic and electrical fields may
exist around these P-Lead wires that can induce errors and noise into sensitive systems. Preferable routing is along grounded panel and
frame members. Maintain at least 1 ½ inches of clearance between P-Leads and other sensitive circuits.
Keep in mind the following additional guidelines:
 Wires and cables shall be positioned or protected to avoid contact with rough or irregular surfaces and sharp edges.
 Wire dress or cabling of wires shall not result in improper electrical operation or interference with any mechanical operation that
will lead to subsequent damage of the wire or cable.
 Cabling or wiring harnesses shall be anchored to avoid damage to conductors or adjacent parts.
 There will be no evidence of burns, abrading, or pinch marks in the insulation that could cause short circuits or leakage. Contact
Horizon Instruments, Inc. for replacement of any suspect cable product.
 The clearance between wires or cables and heat generating parts, such as tubes, power resistors, heating and air-conditioning,
shall be such as to avoid deterioration of the wires or cables from the heat dissipated by these parts under the specified service
conditions of the equipment.
 Shielding on wires and cables shall be secured in a manner that will prevent it from contacting or shorting exposed current
carrying parts.

REMOVAL OF MECHANICAL TACHOMETER

The existing mechanical tachometer must be removed and the P-1000 installed in the location indicated in the attached drawings. The
tachometer drive cable should also be removed and the engine drive attachment be capped with the cap supplied in your hardware kit.
The cap will keep dust out of the oil seals and prevent premature seal failure. The fire-wall must be soundly and properly patched with
approved materials and techniques.
INSTRUMENT MOUNTING
As shown in Figure 7, the P-1000 should be positions to allow for optimum view of the LCD display. The pilot's line of sight to the P-
1000 should be within the indicated angles. Viewing from greater angles will result in decreased readability of the display in low-light
conditions.
Although special High-Intensity LED indicators are provided to overcome the possible "washout" conditions when exposed to direct
sunlight, the P-1000 should be positioned on the instrument panel to avoid direct exposure to sunlight, especially during early morning
and late afternoon when the sun is low on the horizon and light is most likely to shine directly on the instrument panels.
HORIZON INSTRUMENTS, INC. P-1000 INSTALLATION & INSTRUCTION MANUAL
Title:
P103050 E
Number: Revision:
17 of 23
Page: