Trouble shooting – Blue Ox BX8811 User Manual

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DIAGRAMS FOR TYPE C VEHICLES

Trouble Shooting

PROBLEM - LIGHTS WORK CORRECTLY BUT DIM.
POSSIBLE CAUSES/SOLUTIONS

A Bad, loose or faulty ground on either or both vehicles.

B Short circuit in the system on either or both vehicles.

C Motorhome (towing vehicle) alternator too small.

D Motorhome (towing vehicle) wiring is too light to handle extra power requirements.

E Motorhome (towing vehicle) may require a heavy duty flasher unit to handle the extra load.

F Adding and additional ground between both vehicles may help.

PROBLEM - OTHER LIGHTS DIM WHEN TURN SIGNALS ARE TURNED ON.
POSSIBLE CAUSES/SOLUTIONS

A Feedback is present caused by a bad ground or short.

B Motorhome (towing vehicle) has a weak battery. Replace or start motorhome and try again.

C There could be a bulb on the towed vehicle that is bad or shorted out.

PROBLEM - THIRD BRAKE LIGHT BLINKS WITH THE TURN SIGNALS.
POSSIBLE CAUSES/SOLUTIONS

A Follow the optional wiring instructions of the third brake light.

PROBLEM - BOTH TURN SIGNALS FLASH TOGETHER.
POSSIBLE CAUSES/SOLUTIONS

A The diode block is wired into the system before the existing brake wires split. Move the block to a point after the

existing brake wires are separate.

B Type "C" vehicles must have the jumper wire removed from between the left and right brake lights.

PROBLEM - ONLY ONE TURN SIGNAL WORKS.
POSSIBLE CAUSES/SOLUTIONS

A Bad diode block.

B The diode block is wired in after the existing wires split, therefore both wires from the back of the car must be connected

separately to the diode block.

PROBLEM - DIODE BLOCK IS WARM TO THE TOUCH.
POSSIBLE CAUSES/SOLUTIONS

A Under normal use the diode block will become warm to the touch. This is not a cause for alarm.

Mfg. Co., Inc.

Pender, NE 68047