Adapter for trailer's lights on
Adapter for trailer's lights on
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Discussion

MrCippo

Original Poster:

598 posts

212 months

Monday 23rd October 2017
quotequote all
I'm looking to build a simple 240v power adapter to have a trailer's lights continuously on, 13 pin connector on the trailer. What do I need? How do I do it ?

Penelope Stoppedit

11,209 posts

126 months

Monday 23rd October 2017
quotequote all
https://voltage-converter-transformers.com/collect...

Use something like one of the above transformer/rectifier units, there are many @ Google

Wire a 24 Volt Trailer 13 Pin Suzy to the 24 Volt Output from the likes of the above unit. When wiring the Suzy only connect up the lighting circuits that you want to be illuminated when switching on the Power Converter

For any 12 Volt systems you would need to purchase a 240 Volts to 12 Volts Power Converter and use 1 x 12 Volt battery on a trolley

There you go, the jobs a goodun

Other option is to fit 1 or 2 x 12 Volt batteries in a box and wire them to get the 12 or 24 Volts, wire a Suzy to the battery/batteries, put the box on a trolley, you would then have a portable 12 Volts/24 Volts supply, leave batteries charging with a 12 Volt or 24 Volt battery charger when connected to trailer

First option is the best

I like your Trailers, very nice


Edited by Penelope Stoppedit on Monday 23 October 13:49

GreenV8S

30,956 posts

301 months

Monday 23rd October 2017
quotequote all
What voltage is the trailer lighting designed to run at? How much current will it draw? Where is the trailer located relative to the 240V supply you will be powering it from?

MrCippo

Original Poster:

598 posts

212 months

Monday 23rd October 2017
quotequote all
Many thanks for the comments, it's a 12v trailer, not 24v. Simple car towing trailer, nothing fancy. I'm really not sure about Amps, position wise it will be very close to the socket.

Edited by MrCippo on Monday 23 October 13:56

GreenV8S

30,956 posts

301 months

Monday 23rd October 2017
quotequote all
Add up the Wattage of all the bulbs you want to be powered, divide by twelve and that will tell you the approximate average current. I suggest you design the supply to support double that since there will be a current spike when you power them on, and you want some margin in reserve.

If you're using ordinary filament bulbs you don't need a well regulated supply and can use just about any power supply with the right current and voltage rating. An ordinary cheap car battery charger would probably do the job, and be useful in its own right if you ever need to charge a battery. Just make sure you don't get a fancy voltage-sensing battery conditioning type of thing, you just want a dumb charger. If you use a battery charger that ought to have a fuse on the lower voltage side; if you use a different power supply, you may need to add your own fuse. Are the 240V supply, wire to the trailer and the trailer itself all going to be inside in a secure location? If not, you will need to consider what protection this installation is going to need against weather damage, mechanical damage or little fingers fiddling with it. If the 240V supply isn't already RCD protected, I'd want to have RCD protection in the 240V supply just as a precaution. If this is going to be unattended, best make that a latching/passive RCD. If the trailer already has a trailer lighting connector I'd suggest getting a matching trailing socket for the 'car' side of that connection, and use a small junction box to connect the wires from that to the incoming cable from your power supply.

Penelope Stoppedit

11,209 posts

126 months

Monday 23rd October 2017
quotequote all
I shouldn't have posted anything here apart from - Have you checked your public liability insurance for having 240 Volts near to your trailers

If you are ok to do this I have included a waterproof method of my above second solution


Is there room to fit everything in the trailer?

Edited by Penelope Stoppedit on Monday 23 October 16:16

MrCippo

Original Poster:

598 posts

212 months

Monday 23rd October 2017
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Very good, thanks! I should of mentioned, it's in doors, there is no water. I need this gizmo for indoor shows, it seems people are more attracted to a trailer if it has the lights on!

GreenV8S

30,956 posts

301 months

Monday 23rd October 2017
quotequote all
If it's only for use during a show, consider powering it all from a 12V battery? That eliminates a lot of issues which could be significant if the trailer is accessible to the public.

MrCippo

Original Poster:

598 posts

212 months

Monday 23rd October 2017
quotequote all
I'm not sure the battery would last the 4 days tho. I could put a charger on it but it's a fair pain in the back side to lug the battery around (especially 3 of them as I will have at the next big show). So plug in is the way forward I reckon.

GreenV8S

30,956 posts

301 months

Monday 23rd October 2017
quotequote all
Four days would be a stretch, I agree.

I'm envisaging a indoor trade stand with power available and the public having limited access. From the electrical point of what what you're proposing would be quite simple and anybody with basic electrical skills ought to be able to wire this up safely. I assume you will hide the wiring away to avoid trip hazards and so on. You'll still need to consider the public liability implications though.

tapkaJohnD

2,000 posts

221 months

Thursday 26th October 2017
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MrCippo said:
I'm looking to build a simple 240v power adapter to have a trailer's lights continuously on, 13 pin connector on the trailer. What do I need? How do I do it ?
Buy a very long reel of cable?
Nhoj

Peanut Gallery

2,605 posts

127 months

Thursday 26th October 2017
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MrCippo said:
I'm not sure the battery would last the 4 days tho.
I am sure any decent battery would keep LED lights going 24/4.

Randomly, wire in the indicators with a flasher relay unit to get a flashing beacon to beckon the customers forth!

MrCippo

Original Poster:

598 posts

212 months

Thursday 26th October 2017
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Yup, thought about the indicators also, unfortunately the back door covers the rear clusters where the indicators are...so not visible!

AW10

4,550 posts

266 months

Saturday 4th November 2017
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Battery plus something like a CTEK trickle charger. They put out up to 5 amps and if that's not enough during the day it'll fully recharge overnight. Or the Lidl alternative for £15.