1
these instructions pertain to the initial installa-
tion only. operating instructions are contained in
the owner’s manual.
Read all instructions before installing or operat-
ing the brakemaster system. failure to understand
how to install or operate brakemaster could result in
property damage, personal injury or even death.
1. AlWAyS checK the RoADmASteR WebSite
—
www.roadmasterinc.com — for vehicle-specific informa-
tion. Select ‘Vehicle-Specific Info,’ enter the motorhome
and towed vehicle make, model and year, then select
‘Braking Systems’ and scroll down the page.
2.
if the battery must be disconnected for towing
,
a stop light switch must be installed. ROADMASTER
manufactures stop light switch kits for a number of ve-
hicles; to see if one is available for any specific vehicle,
visit www.roadmasterinc.com and select ‘Vehicle-Spe-
cific Info,' enter the vehicle make, model and year, then
select ‘Braking Systems' and scroll down the page.
Note: if a stop light switch kit is listed on the website
for any particular vehicle, it is required.
Note: an Automatic Battery Disconnect (part number
765) is available for vehicles which must be towed with
the battery disconnected. If you choose to install the
Automatic Battery Disconnect, a stop light switch is still
required; the Brake-Lite Relay is not required.
3.
if the vehicle to be towed has an ‘active’ (or,
‘continuous power assist’) braking system, or if the
vehicle is not equipped with power brakes
— order
the optional Brake Pressure Reducer (part number
900002) to adapt the vehicle to the BrakeMaster sys-
tem.
Vehicles with ‘active’ brake systems include several
hybrid vehicles, such as some models of the Ford Es-
cape hybrid and the Mercury Mariner hybrid, as well
as the H3 Hummer. These vehicles, and others with
these systems, are designed so that even when the
vehicle is set to ‘tow’ mode, the braking system is still
active, thus requiring minimal pressure to engage the
brakes.
if the vehicle to be towed has an ‘active’ brak-
ing system, or if the vehicle is not equipped with
power brakes, install the optional brake Pressure
Reducer.
if the reducer is not installed, brakemaster will
apply excessive force to the towed vehicle’s brake
pedal, causing severe tire and/or brake system dam-
age, as well as other, consequential damage.
4. if fuse(s) must be removed from the vehicle be-
befoRe yoU beGin the inStAllAtion…
fore it can be towed
— verify that removing the fuse(s)
will not disrupt power to BrakeMaster, or otherwise af-
fect the installation or operation.
5. optional seat adaptor brackets are required for
some towed vehicles
and simplify the installation for
others. Determine if a seat adaptor bracket is required,
or if one is available, for the towed vehicle — visit
www.roadmasterinc.com and select ‘Vehicle-Specific
Info,' enter the vehicle make, model and year, then
select ‘Braking Systems' and scroll down the page.
6.
test-fit the brake pedal clamp
— although the
pedal clamp fits the vast majority of vehicles, in rare
circumstances, it may require additional adjustment. If
the pedal clamp does not attach to the brake pedal as
described on page 3, call the ROADMASTER Technical
Service Department at 800-669-9690.
7. check the towed vehicle’s brake lights
—
Brake-
Master must function when all adjustments have been
made to prepare the vehicle for towing. These adjust-
ments may include: turning the ignition key to the “tow”
position; pulling fuses; disconnecting the battery; and
setting the transmission to a particular gear or in a
particular sequence.
However, some vehicles’ brake lights will not operate
when these adjustments have been made.
Check to see if this is the case: after all adjustments
have been made, apply the brakes, and check to see
if the brake lights illuminate. If the brake lights do not
illuminate, a two-prong stop light switch and 10-amp
fuse must be installed.
ROADMASTER manufactures stop light switch kits
for a number of vehicles; to see if one is available for
any specific vehicle, visit www.roadmasterinc.com.
Note: check the owner’s manual to see if the vehicle
is equipped with an “automatic shut down” feature. If
this is the case, ensure that the vehicle is not in auto-
matic shut down mode before performing this test.
Note: if you must install a Brake-Lite Relay — see
step 8, below — a stop light switch is not required.
8. An optional brake-lite Relay may be required.
Refer to “Brake light solutions” for instructions on how
to determine if the relay must be installed.
Note: a stop light switch (see steps 2 and 7 above)
and a Brake-Lite Relay are mutually exclusive — if you
use one, the other is not necessary.
9.
An optional tee may be required
to connect the
BrakeMaster air line to the motorhome brake relay valve
or air booster housing. Refer to “Install the motorhome
air line.”
These tees are available in two sizes: ½" (part num-
ber 450076) and 3/8" (part number 450077).
10.
if the motorhome is equipped with air over hy-
draulic brakes
— an additional amount of air line (part
number 450700) may be required.
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