Roadmaster 98300 Installation Instructions Manual - Wire The Air Compressor
continued from preceding page
ATC fuse into one of the provided fuse holders. The
fuse holders are attached to a short length of wire,
with a butt connector at one end and a ring terminal
on the other (Figure 3).
Use the butt connector to attach the short length of
wire with the fuse holder and the 20-amp ATC fuse to
the end of the red wire. (See the electrical schematic
on the inside front cover.)
6. At the starting battery, attach one of the large ring
terminals to the end of the black wire.
The black wire will be connected to the negative
terminal of the starting battery; the red wire will be
connected to the positive terminal. To eliminate the pos-
sibility of personal injury or equipment damage, do not
connect the wires until the installation is complete.
The 20-amp fuse must be installed at the positive
terminal. If a short circuit develops and the fuse
is not in place, the battery and other equipment
may be damaged; additionally, sparks may cause
an electrical fire or a battery explosion.
7. Choose the most convenient ignition (switched)
power source from the motorhome — any 12VDC+
source which is powered only when the motorhome’s
ignition is turned on. Route the bare end of the supplied
length of blue wire from this point to the air compressor.
As before, avoid moving parts, sharp edges or “hot”
components such as the engine or exhaust system as
you route the blue wire to the air compressor. Where
appropriate, use wire ties to secure the wire in place.
8. At the air compressor, cut the blue wire to length.
Using one of the small ring terminals, attach the blue
wire to the terminal block screw labeled “blue wire” in
Figure 2.
Note: due to manufacturing variances, the preat-
tached blue wire may be mounted to a different terminal
block screw than the one shown in Figure 2. If this is
the case, match color to color — blue wire opposite blue
wire.
9. Insert the remaining 10-amp ATC fuse into the sec-
ond provided fuse holder. As in step 5, attach the fuse
holder and ring terminal to the end of the blue wire with
the butt connector (Figure 3).
CAUTION
In order to prevent damage from a short circuit, the
10-amp fuse must be within six inches of the electri-
cal connection. If the 10-amp fuse is farther than six
inches, a short circuit may cause significant damage
to the towed vehicle’s electrical system, an electrical
fire, or other consequential, non-warranty damage.
The blue wire will be connected to the ignition power
source you chose in step 7. To eliminate the possibility
Wire the air compressor
of personal injury or equipment damage, do not connect
the blue wire until the installation is completed.
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