Sierra Marine Parts Catalog
UNSHROUDED
4 Pole Flat Connectors
Trailer Side
Shrouded connectors provide better protection against weather
dirt and moisture. Unshrouded connectors are found on most
OEM trailers. The plugs are interchangeable and can connect together.
Tow Vehicle Side
SHROUDED
White
Ground
Brown
Tail, License, Marker Lamps
Trailer Side
Yellow
Left Turn Signal/Stop Lamp
Green
Right Turn Signal/Stop Lamp
Tow Vehicle Side
Set of Both
Tow Vehicle Side
Trailer Side
Description
Halves Part #
Part Number
Wire Length
Part Number
Wire Length
NSS
4 pole Flat - Unshrouded
4-12"
4-12"
4 pole Flat - Unshrouded
3-48", 1-18"
4-12"
4 pole Flat - Shrouded
4-12"
4-12"
4 pole Flat - Shrouded w/ splicers
4 pole Flat - Shrouded
3-48", 1-18"
4-12"
NSS
4 pole Flat - Shrouded rewire kit
3-48", 1-18"
4-20'
NSS
4 pole Flat - Shrouded rewire kit w/ Splicers
3-48", 1-18"
4-20'
4 pole Flat - Shrouded 5' extension Harness
4 pole Flat - Shrouded 25' rewire kit
4-25'
TESTER
TESTER
TESTER
DUST CAPS
Allows for quick and easy diagnosis of trailer/tow vehicle lighting problems; simply plug into vehicle
4 Pole Flat Dust Caps
trailer connector. LED lighting allows for each circuit to be quickly tested and evaluated.
5 Pole Flat Connectors
White
Ground
Brown
Tail, License, Marker Lamps
Yellow
Left Turn Signal/Stop Lamp
Green
Right Turn Signal/Stop Lamp
Blue
Trailer Brake Solenoid
Set of Both
Tow Vehicle Side
Trailer Side
Description
Halves Part #
Part Number
Wire Length
Part Number
Wire Length
5 pole Flat - Unshrouded 18" extension Harness
5 pole Flat - Unshrouded
5-48"
5-70"
6 Pole Square Connectors
Similar to above except with 6 color coded wires to provide for 5 circuits PLUS ground.
Color codes are as follows:
White
Ground
Green
Right Turn Signal
Red
Stop Lamps
Brown
Tail & License Lamps
Blue
Auxiliary
Yellow
Left Turn Lamp
Trailer Side
Tow Vehicle Side
Tow Vehicle Side
Wire
Trailer Side
Wire
Part #
Description
Replacement
Length
Replacement
Length
53
TC43924 Shrouded set of both halves.
Not sold separately
48"
Not sold separately
12"