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Towbar & Trailer Auto Electrics
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Towbar Accessories
Quality Towing Accessories for use on car trailer,caravan, boat trailer,heavy goods vehicle semi trailer, agricultural tractor , recovery vehicle, etc:
Click the image or the details link for more information about the product, or just click
the shopping cart icon to add the item to your shopping basket.
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12N METAL 7 PIN PLUG
Price: £3.12 | Pack size:1
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12N METAL 7 PIN SOCKET
Price: £3.50 | Pack size:1
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12N PLASTIC 7 PIN PLUG
Price: £2.40 | Pack size:1
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12N PLASTIC 7 PIN SOCKET
Price: £2.14 | Pack size:1
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7 PIN PLUG 12S PLASTIC
Price: £2.40 | Pack size:1
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24N HGV SEMI TRAILER 7 PIN PLUG
Price: £8.50 | Pack size:1
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24N HGV TRACTOR UNIT 7 PIN SOCKET
Price: £8.10 | Pack size:1
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12N SOCKET READY WIRED WITH 7 CORE CABLE AND MOUNTING
Price: £6.76 | Pack size:1
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12S SOCKET READY WIRED WITH CABLE AND MOUNT PLATE
Price: £7.44 | Pack qty :1
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DUAL TOWING ELECTRICS SOCKETS 12N / 12S READY WIRED
Price: £12.76 | Pack size:1
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FLASHER UNIT (L)
Price: £11.38 | Pack size:1
12 Volt Direction indicator flasher unit (L)
Price: £11.38
General details: Flasher unit with pin C2 may be required on some vehicles to operate dashboard trailer indicator warning lamp. Check with the specific vehicle manufacturers information to make sure this item is suitable for the intended application
Connection details: Terminal 49 : Power input
Terminal 49a : Power output to Left / Right indicator switch or Hazard warning switch
Terminal 31 : Ground
Terminal C2 : To Dashboard instrument panel trailer indicator warning lamp
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NO.PLATE LAMP BLACK
Bulk Price: £53.58 | Pack qty :10
NO.PLATE LAMP CHROME
Price: £62.48 | Pack qty:10
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12 Volt REVERSING WARNING BLEEPER
£13.14 each (excl vat)
FRONT POSITION MARKER LAMP
Price: £13.42 | Trade pack qty:10
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| 12N Wiring Diagram table for plugs and Sockets (12 volt trailer electrics obligatory lighting)
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7 PIN PLUG 12N METAL
Price: £3.12 | Pack size:1
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7 PIN SOCKET 12N METAL
Price: £3.50 | Pack size:1
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Terminal No.
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Wire Colour
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Function
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1 (L)
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Yellow
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Left Hand Direction Indicator
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2 (54G)
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Blue
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Rear Fog Lamp
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3 (31)
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White
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Earth
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4 (R)
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Green
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Right Hand Direction Indicator
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5 (58R)
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Brown
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Right Hand Tail Lamp, Sidelamp, No. Plate Lamp
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6 (54)
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Red
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Brake lights
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7 (58L)
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Black
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Left Hand Tail Lamp, Sidelamps.
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Many modern vehicles have computerised vehicle electrical systems often known as CANbus systems.
Vehicles using CANbus wiring may require fitment of a bypass relay or even vehicle specific wiring kit when fitting towing electrics. Some vehicles may also require a computer software update to modify suspension settings whilst towing.
Top tip
A common fault with trailer electrics results in all lights dimming and flashing when brake or indicators are switched on can be caused by a bad earth return connection on vehicle or trailer wiring, possibly due to corrosion at a wiring plug.
12S auxilliary circuit plug and socket wiring for 12 volt towing electrics
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Terminal No
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Wire Colour
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Function
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1 (L)
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Yellow
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Reversing Lamp
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2 (54G)
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Blue
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Battery Charging from Split charge Relay (Pre 1997)
or Spare (Post 1997)
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3 (31)
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White
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Earth
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4 (R)
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Green
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Power Supply permanent 12 volt
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5 (58R)
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Brown
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Sense
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6 (54)
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Red
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Fridge
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7 (58L)
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Black
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Spare
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Auxilliary Power supply and refridgerator wiring from the vehicle should be supplied via a relay wired to activate only when the vehicle engine is running, to prevent high current draw from the auxilliary battery as the vehicle starter motor operates. This power circuit should also be fitted with a fuse close to the vehicle main battery.
13S Plug and Socket Wiring Table
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Terminal No.
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Wire Colour
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Function
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1
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Yellow
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Left Direction Indicator
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2
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Blue
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Rear fog lamp
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3
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White
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Earth Return for pins 1 to 8
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4
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Green
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Right Direction Indicator
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5
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Brown
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Right Hand Tail, End Outline Marker, and No. plate Lamps
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6
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Red
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Brake Lamps
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7
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Black
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Left Hand Tail, End Outline Marker,and No. Plate Lamp
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8
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Yellow
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Reverse Lamps
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9
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Green
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Power Supply
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10
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Blue
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Caravan or Trailer Auxilliary Battery Charging
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11
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Red
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Refridgerator or spare
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12
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Brown
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Spare
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13
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White
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Earth Return for terminals 9 to 12
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Components Supplied Include: Black 7 Core cable ,Grey multi core cable (BS6862)
12N Socket (ISO1724)7 Pin,12N Plug (ISO1724)7 Pin, for caravan or trailer lighting circuits.
12S Socket (ISO3732) 7pin, 12S Socket (ISO3732) 7 pin, for caravan auxilliary circuits ( including split charging circuit
and fridge power supply)
13 Pole plug / socket (ISO11446) for lighting and power supply circuits.
Socket testing equipment,Trailer socket brackets, Single or double (Twin).
Obligatory lights, Auxilliary lights .13 Pole to 7 Pole converter plugs. Trailer wiring extension cables made to order.
24N Commercial Vehicle 7 pin Trailer Wiring ISO1185
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Terminal No.
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Wire Colour
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Function
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1
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White
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Common Return
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2
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Black
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LH side lamps,marker lamps,No.Plate lamp
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3
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Yellow
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LH Indicator lamps
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4
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Red
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Stop Lamps
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5
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Green
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Right Hand Indicator lamps
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6
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Brown
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RH Rear side lights,No.Plate lamp,front marker lamp
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7
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Blue
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Trailer brake control
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West Mercia Mechanical Services,
10 Arrow Road,
Telford.TF5 0LF.
United Kingdom.
Telephone: 01952 247007
Mobile: 07703 558610
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