EasyTouch RV 355 Manual
5
©2022 Micro-Air Corp March 15, 2022, revision 1.10
Wiring the thermostat
Original thermostats can have a plug-in connector or be direct wired to the RV manufacturer’s
wiring. Thermostats wired with a plug can simply unplug the original plug and plug in the EasyTouch
thermostat. Wired thermostats require the optional connector which can be ordered with the
thermostat or ordered separately.
To wire the connector models, match the original thermostat wiring colors to the connector
colors. Please note that manufacture wiring from the wall may not match the colors until it joins with
the wiring stub from the original thermostat. See Table 1 for details on the colors used with the
thermostat and the function of the wires.
Note: See Appendix C: 9430-334 wiring for a different wiring table when replacing model number 9430-
334.
Table 1
Original
thermostat wire
color
Micro-Air harness
color
Function
Factory harness color
(Provided to write in your
color)
2- pin
connector
Purple
Purple
Signal 1
Black
Black
Signal 2
9-pin connector
Green
Green
Heat 4
White
White
Heat 1
Blue
Blue
Ground in
Red/White stripe
Red/White stripe
+12 VDC out
Red
Red
+ 12 VDC in
Blue/White stripe
Blue/White stripe
Ground out
Orange
Orange
Heat 2
Yellow
Yellow
Heat 3