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For all other vehicles, use a test probe to nd the cold side of the stoplight switch. Probe
the switch wires until a wire is found that is only on when the brake pedal is pressed
IMPORTANT: Once a cold side wire is found, test to ensure that the wire is not grounded
when the pedal is in the up position. If the wire is grounded, the brake control unit will be
destroyed when manual control is used.
Reconnect the tow vehicle's negative battery terminal and attach the white 10 gauge
wire previously positioned near the battery to the negative terminal using a ring terminal.
Using 12 gauge, or larger, stranded wire and a ring terminal, connect
the 'battery' side of the circuit breaker to the positive battery terminal.
Secure all loose wires with cable ties so that they will not be damaged and reconnect
the battery. See vehicle's owner's manual for special re-connection instructions.
To test installation, without a trailer connected, push the brake pedal. A single green status
LED should light up on the display. If the green LED does not light or if any other LED does
light, see display modes error condition section of this guide (page 16).
Setup
Preliminary adjustments: With the trailer connected, press and
hold the brake pedal, the display will show the output setting.
Adjust the output control left or right until three green bars
are displayed. Move the sync control to near center position.
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