Safety Systems

Two saftey chains are required to keep the trailer connected to the tow vehicle if the coupler should separate from the hitch ball. The chains are permanently attached to the trailer tongue and are connected the receiver hitch usually using large hooks. The safety chains should cross under the trailer tongue. They should be short enough to keep clear of the road but long enough to allow the trailer to turn without becoming taut.

All trailers should have an electrical connection for running and brake lights. The lights are powered and controlled by the tow vehicle using a multi connection plug. Trailer and tow vehicle connectors vary and may have from four up to seven circuits. If the trailer and the vehicle plugs do not match an adapter is required. These are carried by trailer dealers and some auto parts stores.

When the trailer is connected and wiring connected to the tow vehicle check all electrical systems whether using an adaptor or not.

Electric brake control

Heavy trailers are usually fitted with electric brakes. These are connected to the tow vehicle through the same multi connection plug as lights.

The tow vehicle will be fitted with a sending unit that is adjustable by tow vehicle driver.

The tow vehicle's standard mirrors may be inadequate for vision to the rear if the trailer is large. Temporary strap on mirrors may be required for extended vision. If the vehicle is used regularly for towing, permanent mirrors should be fitted.