Electrical towing wiring problem on Grand Caravan 2006

Did you mean plug or socket?
Have you verified the socket is providing the correct supplies using a towing electrics tester?

Towing electrics are often inadequately installed and often the materials are inferior and trailer electrics often aren't much better as water ingress into lamps and cables usually causes corrosion and inadequate ground paths - I have seen wires that have suffered water ingress where the internal conductor has corroded away for several inches inside the insulation.
Towing electrics usually need regular attention to keep them in working order...

A question often ask and much disregarded
although the tow bar weight is within limits
the load distribution bars ( torque bars -stabilizer bars --sway bars etc) not only help distribute the load but act in such a way as to stop the trailer /caravan for developing the sway that tends to make the driver loose control at speed
they also , when properly adjusted, keep the ride height of the towing vehicle level and that improves stability
remember that although the bar weight is 175 kgs that amounts to a load of 525kgs over the rear axle or extra 525 kgs on the rear tires ( mass multiplied by distance from drive axle or rear wheels assuming the distance from the axle/tires to the tow ball is i meter---heavier if the bar is further back from the tires )
to use the distribution bars lifts that weight off the rear axle and places more of the load on the trailer wheels
As a result the car / trailer combination is much safer to operate than without the bars

sure, why not look that up in the FSM.?
why not say which function fails.
park, turns, brake? backup (all 4?) (check ground #5)
after market wire job or factory tow package?
we cant guess any of that.

you can see all the orig. wiring here.
ZJ, click that and 8w wiring chapter.
and see it all, every inch of wire in car."STOCK"
stock means, as it left the factory Day 1.

I looked and didnt see a tow option in the FSM. 1998.
but didnt read every page.

some van don t have a ground wire. hook up to trailer put jumper cables to frame of trailer and van if works install a ground wire plug

Towing must be taken seriously and you must therefore make sure the correct towing accessories. A class 4 hitch cannot handle the massive weight of a horse trailer, it is therefore better if you didnt use it but used a class 5 hitch which can handle the loads.

The 2006 Mazda Tribute w/o factory tow package can't accept a trailer wiring harness. If you install one you will probably burn out the central computer as I did. I had a top notch trailer hitch instaler try three different brand harnesses. I feel Mazda should reimburse me the cost of this car new, as I bought it to tow and was told that it could tow 3500 lbs. False representation!

Go to the auto parts store ... they have or can order for you, a special plug that you insert into your existing wiring harness that will probably include the standard trailer plug. There is an outlet at the back of your truck for this add on.

Thanks for your interest in FixYa.com ... please remember to evaluate my response. Thanks

Most likely the brown wire from the trailer connector is connected to a constant battery voltage source, and it should be connected to the vehicle running light circuit, however someone might have wired the trailer connector up that way on purpose so that the trailer does not draw power from the vehicle running lights and possibly damage the vehicle running light circuit. (Dodge/Chrysler vehicles do have delicate lighting systems) Here are some images to help assist you, and the 4 way connector is the same as the 5 way connector just without the blue wire for the trailer brakes.

The answer is yes and no, but more no than yes. How far do you need to tow the vehicle? It is not recommended that any vehicle with automatic transmission be towed more than a few miles. With an auto transmission, towing without the engine running will not allow fluid to circulate throughout transmission, causing major damage to the gears in the transmission. If possible, use a tow dolly instead of towing on all four wheels.

i would go to a tran shop and ask quiston.and i would ask about a temp gage for the tran while i was there. all so make shore you have the best shock on the rear ok.it would be a real good i dear to make sure you have top of line towing stuff put on or in.the tran are not cheap at all good luck and have a nice day