Urgent help needed

Terrano03 · 10-04-2014, 21:28

Hi, I have only had my terrano 3lt diesel for a few weeks, love it as family had one for years. Any way onto my problem, I tow my caravan so used the terrano this week we are in Derbyshire, however I had only the normal black plug for electrics, and my caravan has to have the gray 12s also. I have gone out today and got the cable, bracket, plug and a 12s smart dual relay. But I can not find on the site or net where to wire into the back of the terrano. Please if you can help, as the caravan is my life line as I take my 5 year old away as I gave him my kidney 3 years ago, and it is our only safe way of being out and about, the terrano allows us 12 month towing and all we need. But I need to attempt this tomorrow as need to drive again on Saturday morning. Please can you assist. Kind regards

Sweety · 10-04-2014, 21:44

Sadly I don't know as i've not done it yet but i'm sure one of the members in the know will be along soon with the info

solarman216 · 10-04-2014, 21:50

Zippy656 is your man he is a caravan engineer, send him a PM, Rick

Lazy-Ferret · 10-04-2014, 22:20

To wire in the S socket, you will need to run a fairly heavy gauge wire from the Battery at the front of the car to the rear, as the Nissan does not have one of sufficient amperage for this. This is the worst part to do. Make sure you have a fuse at the battery end of the cable.

Basically, you need the permanent live from the front to the box you have bought. That then splits it out to a feed for the fridge, battery charge, and perm live. You will need to pick up the reversing light wire, but that is already at the back.

Unfortunately, there are 2 ways of wiring the 7S, depending on the age of the caravan, the newer way has 2 returns, one specifically for the fridge, and the other common for the rest. The original way was to only have one common return for everything.

Assuming your car wiring is still the same as my 1999 2.7tdi, the Orange with 2 white dots is the Reversing lights.

Terrano03 · 10-04-2014, 22:28

Thanks for replays, my caravan is a 2008 .

Sweety · 10-04-2014, 22:46

Clive can I ask why do you need a feed from the Reversing lights for the caravan charging system

Also if you wired up the 7S plug for the later set up 2 returns would it still work on older vans ?

10-04-2014, 21:28	#1
Terrano03 Junior Member Join Date: Apr 2014 Location: Lincolnshire Vehicle: Nissan terrano 3lt diesel Posts: 4	Urgent help needed Hi, I have only had my terrano 3lt diesel for a few weeks, love it as family had one for years. Any way onto my problem, I tow my caravan so used the terrano this week we are in Derbyshire, however I had only the normal black plug for electrics, and my caravan has to have the gray 12s also. I have gone out today and got the cable, bracket, plug and a 12s smart dual relay. But I can not find on the site or net where to wire into the back of the terrano. Please if you can help, as the caravan is my life line as I take my 5 year old away as I gave him my kidney 3 years ago, and it is our only safe way of being out and about, the terrano allows us 12 month towing and all we need. But I need to attempt this tomorrow as need to drive again on Saturday morning. Please can you assist. Kind regards

10-04-2014, 21:50	#3
solarman216 Off road maniac Join Date: Dec 2009 Location: Bexhill on Sea Vehicle: Y60 Patrol Me, 3 ltr Mrs Posts: 17,431	Zippy656 is your man he is a caravan engineer, send him a PM, Rick __________________ Ex banger racer now off road maniac Lokka on the front with manual hubs Diff lock on rear 3 inch SS straight through exhaust Manly winch bumper with 13000 lb winch 10 spike ground anchor, with multiple straps and blocks Super strong body cills capped with scaffold pole 20% stronger springs all round aggressive off road tyres on wheels so just swap. Aim to get stuck and be completely self sufficient in extraction, love getting muddy, 2ft deep is good but rare.

10-04-2014, 22:28	#5
Terrano03 Junior Member Join Date: Apr 2014 Location: Lincolnshire Vehicle: Nissan terrano 3lt diesel Posts: 4	Oh no, the last thing I wanted to do is run wire from the front to the back. Thanks for replays, my caravan is a 2008 .

10-04-2014, 21:44	#2
Sweety Senior Member Join Date: May 2013 Location: Northumberland Vehicle: Terrano 2.7TDI SE LWB Posts: 3,604	Sadly I don't know as i've not done it yet but i'm sure one of the members in the know will be along soon with the info

10-04-2014, 22:20	#4
Lazy-Ferret Senior Member Join Date: Jun 2012 Location: Sevenoaks, Kent Vehicle: Terrano 2.7TDi SE Touring Posts: 5,221	To wire in the S socket, you will need to run a fairly heavy gauge wire from the Battery at the front of the car to the rear, as the Nissan does not have one of sufficient amperage for this. This is the worst part to do. Make sure you have a fuse at the battery end of the cable. Basically, you need the permanent live from the front to the box you have bought. That then splits it out to a feed for the fridge, battery charge, and perm live. You will need to pick up the reversing light wire, but that is already at the back. Unfortunately, there are 2 ways of wiring the 7S, depending on the age of the caravan, the newer way has 2 returns, one specifically for the fridge, and the other common for the rest. The original way was to only have one common return for everything. Assuming your car wiring is still the same as my 1999 2.7tdi, the Orange with 2 white dots is the Reversing lights.

10-04-2014, 22:46	#6
Sweety Senior Member Join Date: May 2013 Location: Northumberland Vehicle: Terrano 2.7TDI SE LWB Posts: 3,604	Clive can I ask why do you need a feed from the Reversing lights for the caravan charging system Also if you wired up the 7S plug for the later set up 2 returns would it still work on older vans ?