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#1
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Strange auto electrical question
I have recently bought a trailer with an electro-hydraulic tipper, powered by an onboard battery. The tow vehicle has two electrical connectors, the standard one for lights etc and a second one to power a caravan.
I have been told that I can use the caravan supply to recharge the trailer battery when towing, but I cannot find any info on the connections needed. Anyone know where I can get this info from? Thanks
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Andy ------------------------------------------------------------------------------------ If I would be a young man again and had to decide how to make my living, I would not try to become a scientist or scholar or teacher. I would rather choose to be a plumber or a peddler in the hope to find that modest degree of independence still available under present circumstances. -- Albert Einstein, The Reporter, November 18 1954 |
#2
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I have enough fun rewireing trailers around here, I don't even want to think of the crazy stuff over there.
Dodge Caravan
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92 SVX #772 140k 6speed, ECU Tune stage II, Koni/Ground control, 3,270lbs. 91 Legacy Turbo 5spd. FMIC, crappy stock turbo, ACT clutch. 78 BRAT (New toy) (Soon to be EJ22T powered) 90 240 SX. RB25 powered!! DRIFT!!!111!!! (GF's car) To many cars to spend time on teh web! |
#3
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Re: Strange auto electrical question
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Should not be too much of a problem. If you just connect the tow cars power to the trailers battery supply, through a diode, it will charge the battery when the cars alt is charging. The diode is to prevent the car from using the trailers supply. It would be wise to put a 5 ohm 30 watt resistor (or a light bulb of that wattage) in series with the diode to limit the current flow. Harvey.
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One Arm Bloke. Tell it like it is! 95 Lsi. Bordeaux Pearl, Aust. RHD.149,000Kls Subaru BBS wheels. 97 Liberty GX Auto sedan. 320,000Kls. 04 Liberty 30R Auto Premium. 92.000kls. |
#4
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Here you go....
http://www.electronics2000.co.uk/dat...ut/trailer.htm Click on "Technical Data" then "Pinout" then 12N/12S connector. |
#5
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Quote:
I tapped up the auto electrician at the local workshop (sneaked around the back.) He said that the official way is by fitting a split charge relay linked to the ignition warning lamp. This disconnects the 12v supply to the trailer when cranking the engine. A simple cheat is to wire in the trailer to the fridge line, which is already fed through a relay. When charging a caravan battery, a relay is already built into the caravan, triggered by the fridge line. The caravan battery cannot be charged directly from the fridge line as it would draw too much current. I can get away with this on my trailer as I am not running anything else off the supply. Harveys method would also be fine, but the shop is out of 25A diodes and are not expecting any in soon.
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Andy ------------------------------------------------------------------------------------ If I would be a young man again and had to decide how to make my living, I would not try to become a scientist or scholar or teacher. I would rather choose to be a plumber or a peddler in the hope to find that modest degree of independence still available under present circumstances. -- Albert Einstein, The Reporter, November 18 1954 Last edited by Andy; 09-17-2004 at 09:13 AM. |
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