From: Jon Shoop (shoop19@brick.net)
Date: Sat Mar 04 2006 - 06:28:33 PST
Try 6-36 volt LED tail lights on the trailer. Works great!
Jon
> One thing could be done, to use a small 24-to-12 switching power supply
----- Original Message -----
From: "Patrick Jankowiak" <recycler@swbell.net>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Friday, March 03, 2006 11:20 PM
Subject: Re: [MV] TRAILERS --
> (buck converter) for each lamp to be lit on the trailer. 24V/1A in, 12V/2A
> out.. less any inefficiencies.
>
> truck socket sees proper currents, trailer lamps see proper voltages.
> (unless you have a fat wallet, you should make your own switchers.)
>
> This could also be done cheeply with any solid state circuit that would
> turn the power on and off maybe 100 times a second with a 50% duty cycle.
> Would not need a full blown regulated switcher. (visions of a 555 timer
> and a BDW94CFP (12A PNP Darlington in an isolated TO-220 case))
>
> but that's for geeks, making your own electronics.
>
> The easiest and cheapest thing by far (other than changing lamps) is to
> add a second set of lamp fixtures with 24V lamps to include the proper
> connector for your truck's trailer socket. Besides, due to the oddities of
> various brake light wiring schemes among civvy vehicles, you may not want
> to mix and match the wiring.
>
> PJ
>
> Arthur Bloom wrote:
>
>> ----- Original Message -----
>> From: "Ryan Gill" <rmgill@mindspring.com>
>> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
>> Sent: Friday, March 03, 2006 2:46 PM
>> Subject: Re: [MV] TRAILERS --
>>
>>
>> At 9:58 AM -0700 3/3/06, SGM PANTANO wrote:
>>
>>>Hey...wake up.. There is no such thing as a 24 volt or a 12 volt
>>>trailer..
>>>The light receptacles in the Military tail lights could care less what
>>>bulb
>>>is in there..
>>
>>
>> But the wiring could. 24 volt wires could be
>> sized smaller, try to run the same wattage bulb
>> at 12 volts and you could fry your wires. Check
>> the wire harness first!
>>
>>
>>
>> Twelve gauge copper wire has an ampacity of 41 in open air (single
>> insulated conductor) and an ampacity of 23 in a harness. For 14 gauge
>> wire, the ratings are 32 amps and 17 amps, respectively. It would take a
>> lot of lamps to reach those limits. In addition, there are fuses which
>> are designed to fry before the wires do.
>>
>> Arthur P. Bloom
>>
>>
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>
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