From: mark@ehle.homelinux.org
Date: Mon Jan 30 2006 - 08:48:50 PST
Thanks, John - that's exactly the info I needed! Now, all I have to figure out
Quoting "Hutterer, John (MPAU)" <john.hutterer@smiths-medical.com>:
>
is how to hook the pintle hitch on the truck to the ball on the tow dolly!
>
> Mark,
>
> That should be the right plug to fit into the socket on a tractor. You
> don't really need the plug on the other end. It should be easy to remove
> with a screwdriver. That would leave you with a cable with seven bare
> wires, probably color-coded. The easiest way to handle your towing needs
> would be to take along a 12 volt test light. Plug you cable into the
> tractor, ground the test light lead, turn on the tractor lights, and
> look for a wire on the cable that is hot. Turn off the tractor lights
> and check the same wire again. It should be dead now. You now have the
> wire that you need to connect to the tow dolly for running lights. I
> would guess that the tow dolly has a flat utility trailer plug on it.
> Buy a mating plug at an auto parts store. The brown wire on this plug is
> probably the tail/running lights. Connect the wire from your tractor
> cable that you identified as the running lights to the brown wire on the
> trailer plug. Do the same test/connect for the left and right turn
> signals. The tractor may have a separate circuit for the brake lights.
> You will need to step on the brake pedal and see if any of the unused
> wires in the cable become live. If so, you will need to set up a
> separate brake light. Simply clamp a standard boat/utility trailer light
> onto the rear of the dolly and run a wire from the cable to this light.
> Of course, you will need to make sure that the trailer is properly
> grounded to the tractor, and that all of your connections are good. This
> is a quick way to set up what you need. You can go on from there to
> become as elaborate as you want.
>
> John=0D
>
> -----Original Message-----
> From: Military Vehicles Mailing List [mailto:mil-veh@mil-veh.org] On
> Behalf Of mark@ehle.homelinux.org
> Sent: Monday, January 30, 2006 9:37 AM
> To: Military Vehicles Mailing List
> Subject: [MV] Trailer electrical hookup
>
> Folks -
>
> This is not MV, so delete if you wish. You are the only truckers I know,
> however
> - hence my asking this list.
>
> I am going to have to drive home a Ford C8000 semi truck from about 700
> miles away. I will be driving my Mustang to it pulling a car tow dolly.
> On the return trip, the truck will be pulling my mustang on the dolly.
> My dilemma is how to interface the truck trailer electrical hookup with
> the tow dolly lights.
>
> If somebody could point me to a web resource with the pinout of the
> truck hookup, I would be grateful. Also, is this ebay item:
>
> http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=3D4608705563
>
> the right part to hook up to the truck electrical jack?
>
> Thanks!
>
> Mark
>
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