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1
Route the Wire Harness in the most
protected manner possible, and securely
make all connections as shown.
Why ground the Wire
Harness to the battery?
The ECU needs a good,
clean ground for opti-
mal accuracy. The Air
Compressor can ground
to the frame, but the
ECU cannot.
BATTERY
2639 Installation Instructions
20 AMP FUSE
RED (+)
BATTERY (+)
12V
BLACK (-)
BATTERY (-)
YELLOW
+12V IGN
NOTE: The yellow wire is not
used, but should be protected
from the environment.
INSTALL THE WIRE HARNESS
2
The yellow wire is not used. Wrap or wire
nut it to protect it from the environment.
9499 AIR COMPRESSOR
9534 WIRE
HARNESS
RED/WHITE
(COMPRESSOR +)
ECU
CONNECTOR
9535 ECU
4
8
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