This Narva 7 Core 4 mm Euro Coil runs power and signals between tow vehicle and trailer over a stretched length of 3.6 metres. The coil uses seven separate 4 mm conductors so you can run stop lights, indicators and auxiliary feeds in one cable across that same 3.6 metre span. The softer Euro style wind keeps less strain on the plugs when the rig leans or turns hard across uneven roads.

The cable uses 4 mm wiring to help keep voltage up at the trailer lamps over the full 3.6 metre reach. The coil is wound to hold its memory so it pulls back in tight and stays off the drawbar when you are not at full stretch. Both tails come fitted with Narva 7 pin plugs under part number 821 so the kit drops straight into standard Narva trailer sockets. That makes this a smart buy for tow setups running regular highway and backroad work.

• Narva 7 core trailer wiring coil
• Euro Coil style wound with less tension
• Extends to 3.6 metres at full stretch
• 4 mm conductors for higher current capacity
• Retains excellent coil memory after extension
• Short tail pre-fitted with Narva 821 plug
• Long tail pre-fitted with Narva 821 plug
• Suits 7 pin trailer electrical connections
• Helps keep spare cable clear of drawbar
• Ideal for towing setups needing flexible lead length

Q: What type of trailers suit this Narva Euro Coil?

This coil suits trailers that use a 7 pin electrical connection with a cable run up to 3.6 metres. The 7 core layout matches standard stop, tail and indicator circuits on many box trailers and similar setups. The 4 mm conductors help where extra load like auxiliary power is used. Always check your plug style and wiring layout before installing the coil.

Q: How long is the cable when fully stretched?

The Euro Coil extends to 3.6 metres at full reach. This length covers most distances between towbar and trailer drawbar on typical utes, wagons and vans. Running the coil near its rated 3.6 metres keeps tension more even across the wind. Avoid overstretching beyond this length to maintain coil memory and plug life.

Q: What plug type is fitted to the tails?

Both tails are fitted with Narva plug part number 821. This plug style is used for 7 pin trailer connections in many Australian setups. Having both short and long tails pre-fitted removes the need to crimp your own plugs. You can match the 821 style to your existing sockets before ordering the coil.

Q: What is the benefit of the lower tension Euro wind?

The lower tension wind reduces the pull on sockets when the vehicle and trailer move apart. This helps keep the 821 plugs seated during sharp turns or when driving over uneven ground. Reduced tension also makes it easier to connect and disconnect the leads by hand. The coil still holds strong memory so it retracts neatly when not at full stretch.