Cessna 177 SERIES Service Manual page 346

BASE
FUNCTION GAUGE
COLOR STRIPE
CIRCUITS
(or solid)
COLOR
16 Red None
18
Red Black
A+ Power
Red
White
20 Red
Green
22 Red
Yellow
Ground
16 Black None
18
Black White
Mike Ground
22 Black None
Radio Lights Dim
18 Yellow None
Mike Audio
22 Tan None
Tan (Shielded) None
Mike Key 22 White Black
Radio Speaker 20 Green None
Headphones 22 Blue None
Dev + * 22 Gray
Red
Dev- * 22 Gray Green
0 "Dev*"and "Dev-" circuits are for use in Nav-o-matic 300 autopilots and any associated
omni indicator circuit to which it connects.
NOTE
All other color coded wires are for general use in multi-
conductor radio and autopilot harness assemblies.
Change 7
20-3