Roadmaster 9300 - Installing 12 Volt, 20 Amp Power Connector

16
How to install optional 12 volt, 20 amp power connector #9332
Some models of cars have no power to the cigarette lighter when the ignition key is in towed position. This braking
system cannot operate without power. Also, some cars do not have the required 15 amp power supply for the cigarette
lighter outlet. The following are instructions on how to install the number 9332 kit in order to provide the braking unit with
a new full time 12 volt, 20 amp outlet.
1. Inspect the towed car's fuse panel with a test light. Some of the fuses will have power all the time, while others
will only have power when the ignition is turned on. Find an ATC type fuse that has power with the ignition off.
Pull the fuse.
2. Determine which side of the fuse terminal is "HOT". The "HOT" side will have power to it all the time.
3. Pull the fuse and install the fuse tap on the “HOT” side of the fuse as shown in Fig. 7. With the towed car’s ignition
off, replace the fuse into the socket. Make sure to crimp the fuse tap securely to the fuse blade. Use spade terminal to
connect cigarette outlet to fuse tap. Connect the ground wire to chassis with the screw provided.
Do not connect the fuse tap to the cold side of the fuse socket. If the towed
vehicle’s fuse blows, the braking system will not function and you will have no
brakes on the towed vehicle while towing.
WARNING:
!
CHECK 12 VOLT OUTLET BEFORE PLUGGING IN SYSTEM. Verify that the
wire with the ring terminal is connected to ground while the wire with the fuse
is connected to the fuse block. If the positive and negative wires are reversed, the 20 amp fuse in
the end of the 12 volt power cord will blow.
CAUTION
!
Failure to install inline fuses as shown in Fig. 8 will result in electrical fire,
property damage, personal injury or death, which Roadmaster will not be held
liable for.
WARNING:
!
Install the fuse tap on the side of the fuse
that will be plugged into the “HOT” side of
the socket & install into the fuse box. Make
sure to crimp the fuse tap securely to the
fuse connection.
Figure 7
Figure 8
Towed vehicle fuse panel
Figure 6 - Diagram of 12 volt, 20 amp connector
Cigarette lighter
male adapter
Cigarette lighter
female receptacle
Fuse container
Fuse tap
Ground connection
Spade terminal
20 amp fuse
20 amp inline fuse
Cigarette lighter
female receptacle
Cigarette lighter
male receptacle
Ground connection
Fuse Tap
ATC Fuse with
the Fuse Tap
installed