The charger just doesn't care one way or the other. Step 1 : turn off ALL lights, radio and heater on the 6 volt vehicle. 1956 and newer became 12-volt, negative ground. It is a 1-3/4 inch cube. If it reads between 7 and 8 volts, it's working correctly. Read the meter display panel to find out if your 6-volt generator is producing the correct voltage. And what would be the proper method for jump starting. Connect 12V battery, start car, take jumper cable off ground and quickly stick the 6V cable back on before car stalls out. Many of the old positive ground tractors were 6 volts. How do I jump a 6 volt truck with a 12 volt truck. 1955 model year was still 6-volt, positive ground. My 1954 Dodge pickup has a 6-volt battery. Take a look at the diagram below. Be sure to get the polarity correct. If they turn over slowly on 6 volts, take a look at what is being used for battery cables. 1 - Polarizing procedure is same for positive or negative ground, 6 or 12 volt. Look in the "Mounting Brackets" section to convert this alternator to almost any application. STEP 1: Find Jumper Cables (Jump Leads) Read and follow the Safety and Handling Information on this website and with the jumper cables. A lot of systems depend on you knowing this essential information. It turns over pretty slow even with the battery charger on it. There is only one correct way. 6 Volt Positive Ground Starter - 1963 Cub Attachment(s) by The Riot » Wed Dec 13, 2017 11:41 pm » in Farmall Cub. This makes a parallel circuit. If a vehicle has only one battery, just be sure to hook the cables up in the proper order. 3 – To polarize the generator with: Make sure all lights, radio etc are shut off in the 6V car. Yes, your 1946 John Deere A has a positive ground. Before you connect any jumper cables, check the 6v polarity since many 6v systems were positive ground and you have to match the batteries, not the vehicles. Use the 12 volt to impart a charge to the 6 volt battery and then disconnect it before you try to start the engine, otherwise you might fry your gauges and generator/alternator. I am so confused If my tractor has a positive ground 6 volt, should the cable from the positive post on the battery go directly to the starter ? Choose a location as far away from the battery as the length of the cable allows. 2 - The purpose of polarizing is to tell the generator whether to output positive or negative ground. phone 800-933-4926. Connect a jump lead from the positive terminal to the positive terminal on the 24-volt truck battery. We've got to quit saying, ... What a surprise unsuspecting owners must have had when they went to jump start their three or four year old 12volt POSITIVE ground '55 Packards with a 'normal' 12volt NEGATIVE ground vehicle!!!!! To polarize a generator on a tractor having a Delco 12V negative ground system, attach one clip to the A … Also, you must be sure there is no metal-to-metal contact of the two vehicles. A relatively simple generator and cutout/regulator system took care of battery charging chores. It is not always easy to tell if your car is positive or negative ground. Reverse the polarity of the charger/jump vehicle's cables at the positive ground car. mark sr: My NAA used to be 6 volt positive ground but has since been switched to 12 volt negative ground. With the other clip, briefly for only a split-second (or a spark occurs) tap the negative ( - ) terminal on the battery. Yes, note the ground cable (Key 12) is connected to the positive (+) terminal on the battery and the negative cable (Key 1) goes to the starting motor. Light bulbs are not polarity sensitive and will work on either positive ground or negative ground. To polarize a generator on a tractor having a Delco 6V positive ground system or a Lucas 6V or 12V positive ground system, attach one clip to the A terminal on the generator. Converting From 6 Volts To 12 Volts or Double Your Pleasure, Double Your Fun by John the Old Tractor Guy and llamas, his sidekick . 1950 Ford 6 Volt System With A Positive Ground With No Spark … I checked my coil and its getting power .. then checked my points, i get a spark when the ignition is on and touched with a screwdriver but when its cranked over im not seeing any spark at all from the points when its going thru its cycle of opening and closing . Do not let any metal touch between either vehicle! As you know by now, your tractor was originally built with a 6 volt, positive ground electrical system. Simple visual explanation of the wiring of the 6 volt Generator & Regulator on My Farmall Super A 6 Volt Positive Ground. So the top of the 6-volt scale is the bottom of the 12-volt scale. So does that mean the pos. This is because the 6-volt sender works in a range of between 0 and 30 ohms while the 12-volt sender works between 30 and 90 ohms. So if your cubs were older than that, they should have 6 volt electrical systems. The 6 Volt 10Si series alternator is great for converting old Ford tractors from generator to alternator charging. How do you make a 12 volt battery into a 6 volt battery? Positive goes to positive and negative goes to negative. jump starting a 6 volt positive ground battery, Attach the jumper cables to the battery that has thicker cables. You'll need a set of jumper cables and another vehicle with a charged battery. 4 345 by Glen Thu Dec 14, 2017 1:39 am; convert to 12 volt and loosing power Attachment(s) by pett3227b » Fri Oct 30, 2020 1:33 pm » in Farmall Cub. But make sure neither car touches each other! As a saftey issue, I would recommend not jump starting with a 12 volt at all, although, your new way of doing it is the best way. The wires are color-coded: red is positive, black is negative. go to the starter? 6v positive ground alternator below. 6 Answers. oldtimer_11 The positive ground method was common before the year 1954, and many vintage or classic cars, especially those from the United Kingdom, adopted the positive grounding system. I have my POSITIVE ground 6 volt engine turning over. I've jumped my 6 volt positive ground system from a 12 volt battery connected the same as you would two 12 volt batteries many times without any damage to anything. cable off the battery go to ground and the neg. But it takes two people, one to clamp the jumper cables on the instant the other … The only wiring is the Battery to the starter and ground with a "stomp switch" in the middle. I also have a switched hot wire to the coil and then distributor. If I try to jump start I do not want to fry anything. Step 4 Move the 6v/12v voltage selector on your charger to the 6-volt position. I erroneously put Negative where it is a positive!! You can find cables in auto parts stores, at gas stations or just about anywhere you buy car parts. may apply to others. Can this 6-V positive-ground vehicle be safely jump-started by a 12-V positive-ground vehicle? You charge it like any other 6 volt battery - with a 6 volt charger. I always believed mine to be a positive ground although the positive cable goes to the starter. The positive terminal is connected to ground. (Black on Positive-Red on Negative terminals. Simply so, how do you jumpstart a 6 volt battery? It wants a 6 amp fuse, so I suppose it's good for 50 watts output. The battery terminals are labeled "Pos" and "Neg," or they may have "+" and "-" stamped on them. A-Type, 6 Volt, positive ground - 6.6 – 7.2 Volts at 7-9 Amps. Here's a slightly smaller "Positive-to-Negative Ground High-current Converter" for $70 from: Antique Automobile, 700 Tampa Rd., Palm Harbor, FL. Today, nearly ever other vehicle in service has a 12-V, negative ground system. I am using one on a 1940 H with original 6 volt cut-out relay, positive ground system, and an identical charger on a 1940 M with 12 volt alternator conversion. Addendum February 2013: On 2/21/2013 -0700, John Moglia in Phoenix, Arizona, USA wrote: gm 6 volt … 10Si Series 6v Alternator. 6 volt negative ground alternator. Jack, all cubs prior to mid 1964 were 6 volt, positive ground from the factory. Connect the posative clamp of the jumper cable to the posative terminal of the 6 volt battery and clamp the negative clamp around the jumper cable so it cannot touch anything metal, now go connect the far end of the jumper cables to the 12 volt power source. 9 298 I have seen 12 volt cars jump 6 volt tractors, but that was years ago before cars had lots of sensitive electronics. Next, you need a second person. If you want to jump start a 6 volt positive ground car, the best way is to use another 6 volt battery of either polarity. You can jumpstart a 6 volt with 12 volts, but the safe way to do it is with the key off. #1 Disconnect the ground cable of the 6 volt battery. This leads to many questions I'd like for you guys to think about and discuss. The two Shumaker float chargers I have will automatically detect if the battery is a 6 volt or a 12 volt and set itself accordingly. My 1951 F-1 is still 6 volt positive ground. If either vehicle has dual batteries with cables of the same thickness, use either battery for the jump. BP. Connect a second jump lead between the negative terminal and the engine block or other ground connection in the 24-volt truck.Put the 24-volt truck in neutral and start it following the normal procedure. Charger to the positive cable goes to negative for battery cables way or the other and on. 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