Technical data

13773-001
71-50
Page 1
ELECTRICAL HARNESS
1. DESCRIPTION
This chapter describes the electrical cables, plugs, connectors, etc. which serve power plant and airplane
systems, but are banded together to facilitate removal and installation of the engine.
The airplane employs two engine wiring harnesses. The wiring harnesses connect the following compo-
nents: fuel pump, landing light, fuel pressure switch, fuel flow sensor, oil temperature sensor, exhaust gas
temperature sensor, manifold air pressure sensor, oil pressure sensor, tachometer sensor, magnetos,
alternator, secondary alternator, and ground bus bar. For maintenance practices pertinent to firewall for-
ward wiring refer to the SR20 Wiring Manual. (List of Publications)
2. MAINTENANCE PRACTICES
A. Electrical Harness
(1) Removal - Electrical Harnesses
To remove engine wiring harnesses, disconnect all items listed in above, tag connectors, cut
cable ties or loosen clamps, disconnect firewall connectors, and remove electrical harnesses
from the airplane
(2) Installation - Electrical Harnesses
To install electrical harnesses, connect all connectors at the tagged locations of the items listed
above, secure harnesses with cables ties or clamps, and connect firewall connectors.
Upon installation, perform Operational Check and check cockpit instrumentation for normal
operation. (Refer to 5-30)
30 Nov 2000