Blue Ox BX88144 - Manual (Page 3)

© 2005, 06, 11 Blue Ox Division, Automatic Equipment Mfg. Co. • One Mill Road, Industrial Park
Pender, Nebraska 68047 • Phone 402-385-3051 • Fax 402-385-3360 • www.blueox.com
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wire that is closest to the brake switch to tab 87 on the relay, making sure to connect with a wire that goes to the wiring connector on the front of the
vehicle. Then connect a wire from the other end of the cut wire to tab 30 on the relay. Connect a wire from the car's fuse panel (12V IGNITION) to
tab 86 on the relay. Tab 85 needs to go to a good solid ground connection.
When NOT using the relay, connect a wire from the wiring connector to the "cold" side of the brake switch.
b. Install the breakaway switch to a central location on the towed vehicle's metal frame structure (do not install to the baseplate or any additionally
installed item) on the front of the toad vehicle.
c. Connect one wire from the breakaway switch to the positive terminal of the battery or other constant 12VDC source.
d. Connect the other wire from the breakaway switch to the activation feed wire circuit of the solenoid on the Vac Brake®. Then route a wire from the
green wire of the four wire connector to an open pin on the wiring connector on the front of the vehicle.
e. Mount the bulkhead fi tting with 3/8” push-on fi ttings on the back side, utilizing the supplied bracket, as close to center of the vehicle as possible.
The baseplate is a preferred location to mount the bulkhead. Fig. 2
f. Install the vacuum hose from the back of the previously installed bulkhead fi tting and route it to the Vac Brake® vacuum plumbing using the plastic
vacuum “T” with the check valve oriented so that the black side is towards the bulkhead. Fig. 2
g. Install hose clamps at each vacuum fi tting installed on vehicle for extra vacuum holding power.
2. RV INSTALLATION : VACUUM CONNECTION: Fig. 6 & 7
a. Verify that the 3/8” push-on connector is attached to the back side and the male quick-connect is on the front side of the bulkhead. At the rear of
the motorhome using the included bracket, mount the bulkhead connector assembly, making sure to keep it as close to center as possible. Make
sure all bulkhead assembly connections are tight.
b. IGNORE THIS STEP IF YOU HAVE A DIESEL ENGINE. Locate a vacuum source on the intake manifold of the motorhome engine. Generally you
will utilize a plugged port directly in the engine manifold, or use a plastic tee to splice into an existing primary manifold vacuum line (do not use a
vacuum line connected to engine function devices).
c. Route vacuum line from the vacuum source to the backside of the bulkhead at the rear of the RV.
VACUUM PUMP OPTION FOR DIESEL RV OR DEDICATED VACUUM SOURCE: Fig. 7
a. Find a suitable location for the vacuum pump, generally in the rear engine compartment of the RV, close to an ignition controlled power source.
b. Route vacuum hose from the push-on connector of the pump to the rear of the bulkhead located at the back of the motorhome.
c. Use the black wire on the pump and connect it to a good grounding point on the chassis of the motorhome.
d. Use the red wire on the pump and connect it to a 12 VDC ignition controlled power source. Pump will run continuous when RV is started (use a
male/female shielded spade connector to disconnect power if not towing).
RV WIRING: Fig. 8 and 9
WARNING: WHEN INSTALLING THE INDICATOR LIGHT IN THE MOTORHOME, DO NOT DRILL A HOLE
DIRECTLY IN THE COACH'S DASH. Drilling a hole directly in the dash of the coach could cause serious
damage to the on-board computer systems. This applies to all makes of motorhomes, but is especially
pertinent for Bluebird motorhomes. Alternate methods for installing the indicator light are as follows:
Drill the hole lower in the bordering plastic of the dash
Drill the hole to the left of the driver's stall if there is room
Use a toggle switch mounting bracket from a local automotive store
a. Locate an easy to reach, driver visible place for the lighted remote control switch to be installed on the RV dash.
b. Looking at the back of the switch, with the row of three terminals oriented towards the top, connect the monitor
signal wire (from the TOAD’S brake light switch) to the lower right terminal. The lower left terminal is to be connected to a
suitable grounding point.
Page 3 of 10 292-5809 Rev. C 2/21/11