New Holland T8010 Manual page 1353

Power Mirror Circuit Operation
Switched power is supplied to the power mirror switch from fuse #24. Power is supplied to the mirror switch
connector 130.
Chassis ground is supplied to the mirror switch connector 130.
The mirror switch can be set to control either left or right mirrors. This action changes the contacts within the switch
in order to operate either the left or the right mirror. Only one mirror can be operated at a time.
There are two motors in each mirror assembly. Power and ground are supplied to the motors through three wires
for each mirror assembly, one wire for each motor and one wire in common, therefore the motors can only be
operated in one mode at a time; up only, down only, in only, or out only.
Change in mirror motor direction is accomplished by reversing current flow through the motors.
Power Mirror Circuit Troubleshooting
Before troubleshooting the power mirror system make sure that the following operating conditions are met:
A. The batteries are fully charged and all connections are clean and tight.
B. Check fuse #24.
C. Transmission in neutral or park.
D. Check all connectors for full installation, loose, corroded, pushed out, or bent terminals.
E. Refer to Electrical Schematic.
Section 55 - Electrical System - Chapter 1
POWER MIRROR SYSTEM
55-1-172