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Brake Control Wiring Harness
INSTALLATION INSTRUCTIONS
Note: This harness has been designed for use with
Valley brake controls containing a pre-wired harness
connector. For all other brake controls, use Valley brake
control wiring kit part number 37194.
1. Read instructions thoroughly before beginning.
2. Mount a 30 amp automotive style circuit breaker near the tow
vehicle's positive (+) battery terminal. Using a length of 10 ga.
stranded wire, strip
12 ga. crimp-style ring terminal. Strip
and attach a #10 12 ga. crimp style ring terminal. Connect this
lead to the circuit breaker terminal labeled "BATT". The opposite
end will mount to the vehicle's positive (+) battery terminal during
step 12.
Caution: Do not attach to the vehicle's positive (+) bat-
tery terminal at this time.
3. Feed a length of 10 ga. stranded duplex wire (white & black)
from the brake control to the vehicles battery compartment.
Caution: When passing wire through sheet metal,
always utilize an existing grommet, add a grommet or
use silicone rubber to insulate the wire from the hole.
4. Attach a
⁄
3
8
12 ga. ring terminal to the Black wire in the same manner as step 2.
5. Attach the Black wire to the circuit breaker terminal labeled
"AUX".
Caution: Do not connect the circuit breaker to the vehicle
battery at this time.
6. Attach the White wire to the vehicles Negative (-) battery post.
Note: If the brake control is not properly grounded or is
not receiving a proper power supply, it may operate
⁄
" of insulation from one end and attach a
5
16
" 12 ga. ring terminal to the White wire, and a #10
⁄
" from the opposite end
5
16
⁄
"
3
8
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