I have a old tow motor w/ a wisconsin air cooled engine . I'm looking to change the 6 volt system to 12 volt system. looking for a basic 12 volt wiring diagram for GM alt. and wisconsin parts?

Of course, but first make sure the fan is getting power, pull the electrical connector off the engine coolant sensor and turn the key to run (do not start engine) and if fan circuit is active the fan will run by default. You will need a 12 volt test light to do the checks at the fan motor, about $4-5 at the auto part store. Other reasons for running hot are defective thermostat, leaking cylinder head gaskets and air pockets in the cooling system.

Understanding Caravan and Tow CarUnderstanding Caravan and Tow CarIn the beginning.... The first and oldest electrical system on caravans, that was installed way back when most caravan's were no more than small garden sheds on wheels were the rear lights that replicated the rear lights of the towing vehicle, usually no more than two side lights and two brake lights.
Illumination for inside the caravan was provided by gas lights fed from a small gas cylinder usually clamped to the "A" frame of the caravan. It wasn't long before the lighting system needed to be upgraded, as direction indicators became mandatory on cars, additional wiring was needed to replicate indicators on the rear of the caravan. Skip forward a few years and a rear fog light became mandatory, so a further upgrade was made to the lighting electrical system to allow the rear fog light to be installed. The wiring for these lights was connected through a 7 pin plug to the car that is commonly known as a "12N" connection.Sometime in between the indicators and rear fog light changes, people decided they wanted to replace the gas lights inside the caravan with 12 volt lights that could be run from the car battery. People often used old car spotlights or other 12 volt lights that were found in cars of the time as interior lights and these soon drained the car battery, so an "upgrade" was to install a second battery in the caravan that could be used to provide power for lighting. These were usually old car batteries. It would be another few years before the dedicated "leisure battery" came along. Originally, you would have to take this battery out of the caravan and charge it at home using a standard car battery charger. Again, in a continual developing process, someone came up with the idea of being able to charge the second battery in the caravan from the tow car while driving along the road, or when on site, being able to run the engine of the car and using a long lead be able to plug the caravan into the car to charge the battery for the next nights use of the lights, So a second "supplemental" electrical system was born and the "12S" (S for supplemental as to differentiate it from the 12N or Normal) connection came into being.he 12 Volt systems
The 12 volt systems are split into two. The first, and as we have seen, the oldest is the caravan road lights, that is to say the lights that are required by law to have on all trailers. These lights consist of "tail" or "rear" lights - rear side lights (red), brake lights (red), direction indicator lights (orange), reversing lights (white) and fog lights (red). Due to the size of a caravan front marker lights (white) are required and from 2013 side marker lights (orange) on longer caravans.
12N & 12S Vehicle Wiring
These lights are connected to the car via a 7 pin "12N" type plug or by a more modern "continental" style 13 pin plug. The road lights are usually a complete system with all the supply and earth connections being separate from any other electrical system on the caravan. One of the most common faults with road lights is problems associated with the earth lead, but more of that later.
The only road lights that are not connected via the 12N connection are the caravan's reversing lights. The original 7 pin socket when it was developed was thought to have enough connections for everything anyone could ever want. Unfortunately as the years progressed, the number of "spare" connection on this plug diminished, to the point where there was no spare connection for the reversing lights. However, with the advent of the 12S, this was taken care of.The second 12 volt system is the supplemental system. This is designed so that when towing, you can charge the caravan's leisure battery, power the fridge and in some cases power an electrical brake system. The design of the supplemental system has to take into account a number of things:-
• It must be able to charge the caravan's leisure battery only when the car battery is fully charged and the engine is running.
• It must be able to power the caravan's fridge - but not allow the fridge to flatten the car battery if the engine is not running.
• It must be able to power the internal 12 volt electrical system of the caravan, but turn everything off when the engine is running.
• It must not interfere with the correct operation of the road lights of the caravan or towing vehicle.
OK, so lets look at the first one -
"It must be able to charge the caravan's leisure battery only when the car battery is fully charged and the engine is running"roblems with this type of connection. If the car battery is flat and you try to start the car, a heavy current will be drawn from the caravan's leisure battery and would cause the caravan wiring to over heat and possibly cause a fire. It would also damage the plug and socket connecting the caravan's wiring to the car, as they are not designed to take the high currents involved in starting a car engine. So how can we do this safely?

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CHEVY 350 V8 PROPANE KIT / HOLLEY 4 BARREL SMALL BLOCK INCLUDES ...DUAL FUEL PROPANE & GAS KIT 4.3 V6 TBI SONOMA S-10 S-15 BLAZER ...MODEL 100 SERIES IS A SINGLE DIAPHRAGM AIR-GAS VALVECARBURETOR/MIXER ... IMPCO JB DESCRIPTION: VAPORIZER WITH 12 VOLTFUELOCK ...

[PDF]Truck Camper Owner's Manual - Travel Lite Campers

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USING YOUR LP GAS SYSTEM AT LOW TEMPERATURES . ...... The detector is powered by the 12-volt DC system and is always powered as long as the camper is ...Do not block the tailpipes or situate the vehicle in a place where the exhaust ...... as familiar with your camper as you are with your own personal car or truck.

Cheap Homemade Propane Injection System For ... - YouTube

? 1:57
https://www.youtube.com/watch?v=3RAVBoYX5S0
Sep 11, 2008 - Uploaded by hammerdownauto
The best times I've got with this old truck, fuel tank, tool box and all was in the high 15's. .... The engine I'm using 60 years old and the car body is 40 years old. ... I used a generic propaneregulator and 12 volt air solenoid valve. ... just curious what you think this does to the o2 sensors as far as gas / air mix ...

[PDF]"motorized" Manual - Gulf Stream

I looked up the engine in my old archives and didn't find a sequence but the spec is 22 to 24 ft.lbs. You can't go wrong going from the center toward the outside in several stages; that is start with 10 ft.lbs. on all bolts, then 16 ft.lbs. and finally 24 ft.lbs.
Oil the bolts or use anti seize on the threads and under the heads of the bolts so they all are lubricated and turn equally. Make sure each bolt is turning while the torque limit is attained [dynamic torque v.s. static friction of a bolt not rotating.
Since these engines are flat head and do not have hollow cooling passages, the cylinder head torque isn't as critical as a water cooled engine.
Wisconsin Motors TJD Engine Repair Specification

You might try your local Ditch Witch dealer. The older trenchers used an air cooled 4 cylinder Wisconsin engine.

Voltage conversion necessitates the replacement of all 6 volt light bulbs and motors with 12 volt light bulbs and motors (including the starter), plus the addition of a ballast resistor to the ignition primary so that the ignition primary can continue to operate on 6 volts. You will need to refit a 12 volt starter solenoid, alternator, and regulator to the vehicle as well. Needless to point out that you will also need to replace the radio. You can use the original wiring if it is in good condition, and all switches should operate adequately as long as their insulators are still intact. The 12 volt system uses less current than the 6 volt system, so there should be no problem with wire gauge.
IMPORTANT: If the original system is POSITIVE GROUND instead of NEGATIVE GROUND, you will need to verify the polarity of all motors you replace, plus reverse the polarity of the ignition coil primary.

There isn't an easy or cheap way, if you want to use the original parts you will need to fit voltage dropper resistors or regulators for every electrical line from the fuse box, but that won't work with the dynamo or starter motor, you will need to replace them with 12v versions. You could avoid some of the droppers by changing the bulbs or other items like horn, cooling fan (if electric?) heater motor etc etc to 12v. Do you have a wiring diagram? You can't use one big dropper the current would be too high

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Trailer Wiring Diagrams 4 Way Systems

4 way flat molded connectors allow basic hookup for three lighting functions; right turn signal / stop light (green), left turn signal / stop light (yellow), taillight / license / side marker (brown) and a ground (white).

4 way tow vehicle side.
4 way trailer side.
5 Way Systems

Same as 4 way system listed above but adds a extra blue wire for brake signal or auxiliary power. Used on pop up camper trailers or utility / boat trailers.
5 way tow vehicle side.
5 way trailer side.
6 Way System, Rectangle Plug 3/4 inch by 1 inch 6 way rectangle connectors right turn signal (green), left turn signal (yellow), taillight (brown), ground (white). The red and blue wire can be used for brake control or auxiliary. Use on a small motorcycle trailer, snowmobile trailer or utility trailer. Can also be used as custom wiring on trailers with 3 light/wire systems. See "Tow Vehicle Taillight Wiring" below.
6 way tow vehicle side.
6 way trailer side.
6 Way Systems, Round Plug

Round 1 1/4" diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights, auxiliary 12v power or electric brakes. Note: The black (sometimes red) 12v and blue electric brakes wire may need to be reversed to suit the trailer. Check with a test light or VOM. Uses: horse trailer, travel trailers, landscaping trailer, car trailer, etc.

6 way tow vehicle side.
6 way trailer side.
7 Way Systems

Round 2" diameter connector allows additional pin for auxiliary 12 volt power or backup lights. Uses: heavy duty landscaping trailer, car trailer, boat trailers, horse trailer, travel trailer, construction trailer, etc. Check with a test light or VOM.

7 way RV flat blade tow vehicle side.
7 way RV flat blade trailer side.

1 disconect neg.battery cable 2 drain the cooling system 3 remove air intake tube from filter housing to throttle body 4 remove top half of fan shroud 5 remove the serpentine belt 6 use a strap wrench to prevent the waterpump pulley from turning while turning the fan clutch in the counterclockwise direction. 7 remove fan and set aside 8 remove belt tensioner 9 remove hoses from water pump 10 remove 6 bolts, 3 on either side and remove the water pump. 11 remove the thermostat housing from the old pump and install on the new one. 12 re assemble in reverse order. make sure the mating surface of the engine block where the pump bolts on is clean and free of old gasket material before installing new pump and gaskets. When assembled fill cooling system, start engine and let idle untill thermostat opens and engine reaches operating temp.KEEP WATER LEVEL FULL. After a test drive recheck the coolant level, and you are done.

HI
firstly what is the number of diagnostic code?? (P0???)
the (IAC)idle air control motor locate in the engine near the intake manifold it have a 6 pin connector:-
the 2 & 5 is 12 volt supply from fuse box
the 1,3,4&6 is from (ECU) engine control unit
it function is control the idle speed of engine

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