90 trailer wiring harness question (UK 7-pin adapter?) - Defender Source
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  #1  
Old November 21st, 2012, 04:48 PM
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90 trailer wiring harness question (UK 7-pin adapter?)

So I'm probably the only one that wants to go from the US 4-flat to the UK round 7-pin connector for my trailer wiring.

Up in the wheel well is this connector (about 1" wide):
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I'm fairly certain they make a UK wiring harness that will just plug into this, but I've been unable to find one (checked ebay uk, lrseries, etc). Anyone know a source for this?

Yes, seems absurd to do this...but I can just plug it in at my leisure and tow the Sankey without needing to mess with the wiring on either truck. Then, if I need 4-flat I can just plug in the old pigtail and be back to original wiring. I've got an adapter now that I rigged up, but things get squirrelly on the lights for the Sankey (turn signal cuts out when I hit brakes, running lights as brake lights, etc).
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  #2  
Old November 22nd, 2012, 08:30 AM
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Old November 22nd, 2012, 11:11 AM
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I 'be always assumed I get a Sankey and keep the UK system and adapt for US. Then I got a m416.

Us wiring diagram http://www.hitchinfo.com/index.cfm?e...ntpieceid=5148

Uk wiring diagram

http://www.towitall.co.uk/towbars/wiring.aspx

If I was you, I'd replace the flat 4 with US 7 blade connector which will also allow you to run electric brakes on US trailers. Then get the UK vehicle end plug and make up an adapter between the vehicle and Sankey.
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Old November 22nd, 2012, 08:21 PM
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The main problem I'm running in to is the Sankey has separate brake lights from turn signals. But the US wiring integrates these into one. Would be nice to separate them out.
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Old November 22nd, 2012, 08:40 PM
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I run the 7 pin setup on everything. My sankey is wired for the 7. Everything else I use a 7 to four adapter.
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Old November 22nd, 2012, 09:46 PM
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Quote:
Originally Posted by 130Tdi View Post
I run the 7 pin setup on everything. My sankey is wired for the 7. Everything else I use a 7 to four adapter.
Do your Sankey brake lights & turn signals operate independently?
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Old November 22nd, 2012, 10:45 PM
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christ- now you hve me wondering, I'll have to hook it up and see.
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Old November 23rd, 2012, 08:50 AM
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In a 7 pin I would assume they would operate separately...I think someone already told you to just convert it to a 7 pin and be done with it!
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Old November 23rd, 2012, 09:01 AM
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Quote:
Originally Posted by jefhuf View Post
In a 7 pin I would assume they would operate separately...I think someone already told you to just convert it to a 7 pin and be done with it!
US 7 pin still combines turn signals and brakes.
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Old November 24th, 2012, 08:44 AM
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Quote:
Originally Posted by nathanwind View Post
US 7 pin still combines turn signals and brakes.
Unless you wire the brake lights through the brake circuit, which is what I did...and recommend you doing. Remember that in typical vehicles the turn signal, running and brake lights are all the same housing/bulb but LR doesn't work that way. Technically you can add one of those modules like you have on the 110 but for a vehicle like the 90 where you will be towing your camp trailer fairly often, I would just set it up with a 7 pin and stop worrying about mating plugs
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Old November 24th, 2012, 10:19 AM
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I tested the harness pictured in my original post last night. The brakes are on their own line in that harness, and I think I found a female harness to use and make my own connector....just going to use it and splice it into a spare UK 7-pin I have....then it should mate right up to the Sankey with separate brakes & turn signals (not to mention backup lights/etc that the Sankey has too). Seems like ultimately the best route to go to get everything working properly.
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Old November 25th, 2012, 07:42 AM
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and to avoid having Pedro using it!
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