Actron CP8218 - Manual (Page 6)

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3. Remove the warning light sender and install
the proper adapter fitting into the engine block.
If the proper adapter fitting was not included
with the gauge, obtain the CP7555 (NPT
threads) adapter set.
4. Insert the capillary tube tip into the adapter’s
hole and then tighten, with moderate pres-
sure only, the captive fitting (Diagram 1) into
the adapter. Do not over tighten. Sealing tape
or compound may be used on either connec-
tion.
5. Complete the mounting of the gauge.
6. Refill the fluid level to its normal level.
7. Start the engine and observe the fitting con-
nections for leaks and the gauge for proper
operation.
FOR ELECTRICAL GAUGES:
1. Drain the fluid level in the system to below
the sender’s mounting location, which is nor-
mally the factory’s warning light sender lo-
cation.
2. Remove the warning light sender and insu-
late the end of the sender wire. Install the
proper adapter fitting (not included) into the
engine block, if needed. Obtain either the
CP7553 (NPT threads) or CP7573 (metric
threads) adapter set, if an adapter is needed.
3. Install the gauge’s sender into the warning
light sender’s mounting location in the engine
block.
4. Run a length of 18-gauge insulated copper
wire from the gauge’s mounting location to
the sender’s mounting location.
5. Attach the 18-gauge wire onto the top of the
gauge’s sender.
6. Facing the back of the gauge, the connection
post on the right is for the +12-volt power, the
center post is for the ground connection and
the left post is for the sender connection. Af-
ter you have mounted the gauge, connect the
sender wire to the left connection post as
shown in Diagram 2. Do not over tighten.
7. Connect one end of another length of 18-
gauge insulated copper wire to the center
connection post, as shown in Diagram 2 and
the other end of the wire to a good ground
source.
8. Connect a third length of 18-gauge insulated
copper wire to the right connection post as
shown in Diagram 2, and the other end of the
wire should be connected to the fuse box
where the wires will receive +12 volts of
power whenever the ignition key is in a
START, ON or ACCESSORY position.
9. Refill the fluid level to its normal level.
10. Start the engine and observe the fitting/
sender connections for leaks and the gauge
for proper operation.
TROUBLESHOOTING
If your electrical gauge reads lower than you would
expect, check all electrical connections, particu-
larly grounding connections. Any poor connec-
tion will increase electrical resistance resulting in
a false low reading.
Diagram 2
CLOSED-EYE CONECTOR
MAKE SURE CRIMP IS GOOD
GROMMET
U-BRACKET
NUT
WIRE
FLAT WASHER
NUT
WASHER
GAUGE
DO NOT LEAVE ANY HARDWARE OUT OF
THESE CONNECTIONS
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