Figure 7-41. Wiring diagram for the heater fan motor and heating elements for the outside mirrors and rear window:
1 - ignition switch;
2 - mounting block;
3 - heater motor switch;
4 - additional resistor;
5 - heater electric motor;
6 - rear window heating element;
7 - outside mirror heating element;
8 - rear window heating switch with indicator lamp;
A - to power sources;
K6 - additional relay;
K7 - rear window heating relay.
The heating elements of the mirrors and glass are switched on using the auxiliary relay K7 type 904.3747-10, installed in the mounting block.
The heating can only be turned on when the ignition is on, since voltage is supplied to switch 7 through an additional relay K6, which is triggered when the ignition is turned on.
Power is supplied to the heating elements through the contacts of relay K7 from fuse F8, which is directly connected to the power sources.
If the rear window or outside mirrors are not heated when the heating is turned on, it is necessary to check fuse F8, wires and their connections, as well as switch and relay K7.
The material was created based on information from the website: «ChevyMan.ru»