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Quiz: Electrical Considerations for Towing
by Staff
The electrical considerations for towing are numerous. Trailers must be wired for taillights, brake lights and signals. These electrical considerations are vital to towing safety.

What is the one common denominator in each U.S. state’s specific towing laws and regulations?

  • Weight restrictions
  • Size limits
  • Working trailer lights and signals
  • Use of towing safety cables

How many circuits do most trailers have to connect to your vehicle?

  • 2
  • 3
  • 4
  • 5

What provides a conducting path which is independent of the normal current-carrying path?

  • The brake lights
  • The circuit
  • The ground wire
  • The breaker

What do most trailer wiring kits come with?

  • T-harness
  • X-harness
  • L-harness
  • Z-harness

What color is the ground wire on a standard 4-wire trailer plug and socket design?

  • Green
  • Yellow
  • White
  • Brown

What color is the tail light wire on a standard 4-wire trailer plug and socket design?

  • Green
  • Brown
  • Yellow
  • White

What color is the right-hand brake light/turn signal wire on a standard 4-wire trailer plug and socket design?

  • White
  • Yellow
  • Green
  • Brown

What color is the left-hand brake light/turn signal wire on a standard 4-wire trailer plug and socket design?

  • Yellow
  • Green
  • Brown
  • White

On 5-wire trailer plug and socket systems, what color wire controls things like hydraulic disc brakes or additional auxiliary outlets?

  • Orange
  • Purple
  • Black
  • Blue

What term is synonymous with the number of wires?

  • Pipes
  • Poles
  • Piles
  • Pairs