Figure 1 TrailSafe Wiring Diagram
NOTES: The return (negative) wires of brakes & brake lights from trailer must be
wired directly to:
9 One of the negative output connections on BatteryPlus35 or J35 if fitted
9 To the non-battery side of a negative side shunt such as the BC300
9 Directly to the battery negative in all other cases
Ensure the house battery has a suitable charging source such as a BatteryPlus35,
J35 or other charging means and is functioning correctly. Refer to manufacturer’s
instructions for these products as required. A basic charging means such as diode
from the Auxiliary to the house battery may be employed in simple systems.
An external automotive-grade fuse is required to be fitted (30 A maximum) between
the TrailSafe and the battery to protect against wiring faults and issues.
Tow Vehicle
0V
Brake Light
Brake
Monitor
Blue
Purple
Brakes
+
–
Brake Lights
30A Fuse
+
–
House Battery
Chemistry
Selection
–
+
TrailSafe
Trailer
Red
White
Red / Black
Green
BatteryPlus35/J35
9
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