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Old 17th May 2008, 06:30 PM
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12v junction box

Hi Guys
Just been wiring my trailer,got it done but Im not happy at all with the wiring.
OK,LED tail lights,licence plate plus trailer brakes.
The LEDs have a seperate cord each that runs to the tow hitch.ie 2 cables as fat as an extension lead plus a twincore for the licenceplate.Ive got a twincore for each trailerbrake to the tow hitch.
They are all neatly fixed inside the split tubing I got for the job.
Obviuously too big a bundle of cables to fit a trailer plug its the butcherd job Ive done of soldering everything together Im not happy with.Its a recipe for future wiring woes!!!!
Any ideas on some sort of junction box to neatly join all the cables into 1 7 core wire???
There are 5 earth wires that become one alone!!! Then 3 tail light wires to one,2 stop wires etc
HELP
Andrew
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Old 17th May 2008, 07:23 PM
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Andy

Just go to somewhere like Dick Smiths / Tandy etc., and buy a small project box (size to suit)

Sealed Polycarbonate Box (H2864) - Dick Smith Electronics - Australia.

and also get a plastic connector strip/terminal block (normally 12 connectors to a strip)

12-Pole Terminal Block (P4848) - Dick Smith Electronics - Australia.

Make all your terminations/connections in the box - then run simple wiring/multicore to the socket


PS After you have made all your connections - fill the box with melted candle wax - that will keep it sealed and water tight
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Old 17th May 2008, 08:02 PM
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Thanks Ladas
Today was a real downer in my trailer project.Just hadnt gazed into my crystal ball with the wiring,and living in a small country town when you realise you need bits it cant happen.Everything up to the all into one cable conversion is mickey mouse.
Will re-do the join when I connect up the trailer dual battery system yet to be sorted.
Andrew
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Classic Rangie(her ride) warm4.6,LPG,Wolf management,F/R ARB lockers
Series3 109 202 LPG(SOLD)
The Toy Series3 109 302V8 Auto(Project)
Stage1 V8 Station wagon
Stage1 V8 Van
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Old 17th May 2008, 08:50 PM
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I'll second those boxes as being good - we used two of them at Christmas time last year to hold the dimmers for the (computer controlled) lights.
We had one tied up in a tree, and another buried in the ground; each with about 10 or so wires going into them. After being out in the weather for over a month, they were as good as the day we sealed them up. (And nothing went wrong with our electronics either - all set for this year )

We stuck the cables in through cable glands - which, if you're going to use this sort of box, you probably ought to do - to keep the dust & water-proof rating up.
Putting the seal on the lid properly is a little tricky at first, and takes a bit of patience and practice, but worth doing.

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Old 17th May 2008, 09:46 PM
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If you want a real water tight seal. You can solder the joins then use Heatshrink Caps. These are a small piece of heatshrink with a closed end, and a gel cartridge in the end. When you heat, it shrinks around the cable and releases the gel and seals the join. We use them in garden lighting.

Probably a bit hard to source in your area, but in the big cities you can just go into a garden light centre and ask for heatshrink caps.

Stu
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Old 17th May 2008, 10:07 PM
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Quote:
Originally Posted by 81stubee View Post
If you want a real water tight seal. You can solder the joins then use Heatshrink Caps. These are a small piece of heatshrink with a closed end, and a gel cartridge in the end. When you heat, it shrinks around the cable and releases the gel and seals the join. We use them in garden lighting.

Probably a bit hard to source in your area, but in the big cities you can just go into a garden light centre and ask for heatshrink caps.

Stu
Or just buy some Raychem
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