6-Volt Jump Start I posted this on the 12-volt conversion thread but thought this might be better. As someone that just picked up a restored '47 Sedan that is still 6-volt, my concern was jump starting if away from home (can't always park on an incline). What's the proper procedure with the positive ground 6-volt system if jumping with a 12-volt source?
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Re: 6-Volt Jump Start You can hook up 12 volts directly to the 6 volt starter to turn the engine over.
Many 6 volt starters are run in 12 volt conversions for years with no issues. |
Re: 6-Volt Jump Start OhioRick is correct. Connect the doner battery first. Put one lead anywhere on the body (ground terminal on the battery is fine) and the other lead you can just hold firmly on either end of the cable that between the solenoid and the starter. Starter will start cranking as soon as you make contact. That cable is isolated from your 6 volt circuit unless you hit the starter button.
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Re: 6-Volt Jump Start But of course don’t forget about the reversed polarity on your positive ground old car. The red positive jumper cable will go to your positive (ground) battery post. The black negative jumper cable goes to the starter.
Also don’t forget to turn-on the ignition switch. Ignition circuit will still be fed by the depleted 6 volt battery. Also make sure the car is in neutral before sending power to the starter. |
Re: 6-Volt Jump Start I don't think the polarity makes any difference when boosting with a 12 volt battery. I just connect one cable to the starter side of the solenoid, other to ground and then touch the booster cable end to the 12 volt battery. With ignition switch on of course. The starter will turn instantly and at least twice as fast. You have to be fast dropping the cable end once the engine starts and hands on the choke and throttle to get it set to run right. I've done it on the 52 Merc a few times when the six volt battery was a bit too weak. Its a lot easier if you have a helper. Some video of mine.
https://youtu.be/YC_daLVs274 |
Re: 6-Volt Jump Start Quote:
Positive always goes to positive regardless of grounding. |
Re: 6-Volt Jump Start Don't forget they also can be started with a good ole hand crank! I believe.
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Re: 6-Volt Jump Start If the 6 volt battery is completely dead, the "Cable to Starter" probably won't work. In such a case, connect it to the battery, but make sure you have all of the lights and accessories turned OFF.
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Re: 6-Volt Jump Start don't pay attention to pos or neg grd. jump the battery. The extra 6 volt will not hurt anything as long as you remove cables fast enough like if you are luckey to have a push button on the solenoid.
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Re: 6-Volt Jump Start 1 Attachment(s)
Why don't the companies that make the portable jump start batteries, make one that is both 6 volt and 12 volt? Or some enterprising sole make an adapter, that you could put on one, to reduce the voltage down to 6 volt?
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Re: 6-Volt Jump Start 1 Attachment(s)
RalohG,
Get yourself one of these and leave it hooked up (I would guess you have power to the building) when you are not driving the car. It will bring your 6 volt battery back up to speed, and you will be good to go the next time to want to start the car. The cold is not friendly to that 6 volt battery, as you know. Good video. |
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Its -30F here tonight so I won't be trying to start anything. Been enjoying your Mercury driving videos with the top down Very scenic. |
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Stay warm. |
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True and why do I need a jump? Because of that stupid heater switch YES the knob lights up only at night. I should get a relay to the ign switch for this habit of turning knob to the left and that is low so on all night ugg |
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Just take the bulb out. My Electro-Vac has a lighted switch. If yours is the same, just pull the knob straight off and then take the bulb out.
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