
3
5. Choose a wire size from the table in Dia-
gram 3 that is a large enough gauge (larger
size wire has a smaller gauge number) to
handle the maximum rated output of your
vehicle’s alternator/generator. Obtain two
lengths of this size wire that are each long
enough to go from the location that was cho-
sen in Step 3, to the ammeter’s mounting
location at the dashboard. Attach closed-eyed
type connectors (Diagram 4), to each end of
both wires.
6. At the location you chose in Step 3, discon-
nect all the wires at the connection except
the wire going to the battery.
7. Connect an end of one of the wires you ob-
tained in Step 5 to all the wires you discon-
nected in Step 6.
8. Connect an end of the remaining wire from
Step 5 to the connection in Step 6 that still
has the battery wire attached to it.
9. If your system matches Drawings 2, 3, or 6,
connect the wire you disconnected in Step 4
to the wires already connected in Step 7. Use
an additional piece of similar sized wire to join
these wires, if necessary.
10. Insulate all connections and use a suitable
method to fasten down the wires in Steps 7
and 9.
11. Route the two ammeter wires to the mount-
ing location for the ammeter. Insulate the
opening in the firewall they pass through.
12. Mount the gauge and attach the remaining
end of the wire from Step 7 to the ammeter
connection post marked with a “+”. Follow
the sequence of washer-wire-nut shown in
Diagram 4.
13. Attach the remaining end of the wire from
Step 8 to the ammeter connection post
marked with a “–” sign, again following Dia-
gram 4.
14. Reconnect the battery ground cable. As you
do, watch for sparks and check if the wiring
you worked with is getting warm. If either con-
dition is noted, IMMEDIATELY disconnect the
battery ground cable and read the Trou-
bleshooting section.
TROUBLESHOOTING
1. If, when you reconnected the battery ground
cable, you noticed sparks or any of the wiring
getting warm, check that all connections are
properly located, and insulated from ground-
ing.
2. With the vehicle not running and the battery
reconnected, turn on the headlights’ high
beam and observe the ammeter. The gauge
should show a drain (–) condition. If a charge
(+) condition is shown, reverse the wires on
the “+” and “–” posts on the back of the am-
meter. If the ammeter shows no change, the
circuit from Ignition/Accessory (I) has not been
properly included in the connections to the
“+” side of the gauge.
MAX. AMP.
WIRE SIZE RATING
12 25
10 40
865
695
Diagram 3
CLOSED-EYE CONNECTOR
MAKE SURE CRIMP IS GOOD
2” AMMETER ONLY:
3 PRONG U-BRACKET
AMMETER
NUT
WASHER
GROMMET
U-BRACKET
WIRE
FLAT WASHER
NUT
WASHER
AMMETER
DO NOT LEAVE ANY HARDWARE
OUT OF THESE CONNECTIONS
Diagram 4
NUT
10
A
I
B
S
B
S
I
A
I
A
B
S
A
B
S
I
A
B
S
I
B
S
A
I
A
I
B
S
Z
A
B
S
I
Z
B
S
I
A
I
B
S
A
B
S
B
S
B
S
I
A
I
A
B
S
B
S
I
A
I
B
S
A
B
S
A
I
Z
B
S
Z
I
A
1
2
3
4
5
6
7
8
APRÈS
AVANT
Schéma 2
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