Comment: Trailer Wiring Diagrams

Submitted: Saturday, Jun 22, 2013 at 21:40

ThreadID: 102894 Views:5523 Replies:7 FollowUps:12

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Nigel C3

Hi, Have just bought a caravan and have plugged in my car and all lights and electric brakes work perfectly but the 12volt interior lights of the caravan do not work when stationary .Have tested my car plug and of course have no positive feed off it with the car lights and engine turned off .How do I wire up my plug so that I can have 12v lights in caravan when we are stopped .My car plug is set to standard 7 pin plug wiring . The previous owner of caravan said they worked perfectly. Where shouild I pick up the power from and to what pin on the car plug should it be attached to .
Thnaks so much .
Regards NigelAdelaide

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Reply By: Member - PJR (NSW) - Saturday, Jun 22, 2013 at 22:43

Saturday, Jun 22, 2013 at 22:43

Go to the Articles section on the exploroz site and have a look at the wiring diagrams. There is a note about auxiliary circuits.

I also think that the previous owner was pulling you leg or has used non standard wiring.

Phil

AnswerID: 513611

Follow Up By: Bonz (Vic) - Sunday, Jun 23, 2013 at 08:40

Sunday, Jun 23, 2013 at 08:40

Hey Phil the problem seems to be in the vehicle plug wiring not the caravan plug, so the prev owner is probably correct mate.

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Follow Up By: Member - PJR (NSW) - Sunday, Jun 23, 2013 at 09:39

Sunday, Jun 23, 2013 at 09:39

Not necessarily so Bonz

If you look at the 7 pin wiring in the articles section of this site you will see that it does not have a 12V lead from the battery when the ignition is turned off.

Pin 1 - Yellow - Left-hand turn indicator
Pin 2 - Black - Reversing signal
Pin 3 - White - Earth return
Pin 4 - Green - Right-hand turn indicator
Pin 5 - Blue - Service brakes
Pin 6 - Red - Stop lamps
Pin 7 - Brown - Rear lamps, clearance and side marker lamps

Where is the 12V feed in this standard mate.

Phil

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Follow Up By: Bonz (Vic) - Sunday, Jun 23, 2013 at 13:06

Sunday, Jun 23, 2013 at 13:06

yep theres different standards, the other owner may have the 12v feed in Pin 2 standard.

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Follow Up By: fisho64 - Sunday, Jun 23, 2013 at 13:31

Sunday, Jun 23, 2013 at 13:31

usually the reversing pin is used as not many trailers use this for anything else.
But it should be a 7 pin large to carry any reasonable current

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Follow Up By: Member - PJR (NSW) - Sunday, Jun 23, 2013 at 13:52

Sunday, Jun 23, 2013 at 13:52

Just like here. Phil's standards and everyone else's, I always wanted to be different. No borg members here.

Phil

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Reply By: Member - Ed C (QLD) - Saturday, Jun 22, 2013 at 23:10

Saturday, Jun 22, 2013 at 23:10

The No. 2 pin on the standard 7 pin plug/socket is designated for a reverse lamp signal..

Not many trailers/caravans have reverse lamps fitted, so many owners use this (No. 2) pin to run the aux. power feed to the van...

I suspect you'll find that your van has been wired thus...

Power can be run direct from the battery (appropriately fused of course), or if there's an aux. power outlet in the the vehicle's cargo area, you can take it from there.

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Follow Up By: Ross M - Sunday, Jun 23, 2013 at 00:36

Sunday, Jun 23, 2013 at 00:36

That pin 2 should connect with the black wire in the caravan if std wiring.

C'van maker probably has used the black in the plug.

In the wiring under the rear of the vehicle there may be a black wire just "hangin' around" ready for connecting the 12v power to it.

FollowupID: 792348

Follow Up By: Bonz (Vic) - Sunday, Jun 23, 2013 at 08:43

Sunday, Jun 23, 2013 at 08:43

Have you tried the caravan lights or tested with the vehicle in reverse? It may be correctly wired and all you have to do is slip the vehicle into reverse and voila Caravan Lights!!

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Follow Up By: Ross M - Sunday, Jun 23, 2013 at 10:46

Sunday, Jun 23, 2013 at 10:46

He might then be regarded as loopy if he is parked with the ignition on ,in reverse, all night.

He says the caravan works, his car might not, so he has to arrange the wire to it's 7 pin base no matter what else is suggested.

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Follow Up By: Bonz (Vic) - Monday, Jun 24, 2013 at 18:01

Monday, Jun 24, 2013 at 18:01

Nah Ross, you see the reverse lights on the car provide perfect ambience lighting for around the van at night and have a magnificent chance of flattening the battery by the morning lol. Yep I meant try it and see, just for a check.