|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
01-08-2024, 11:32 PM | #1 |
Member
Join Date: Apr 2018
Location: Southern California
Posts: 51
|
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?
|
01-08-2024, 11:59 PM | #2 |
Senior Member
Join Date: May 2010
Location: Ohio
Posts: 175
|
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. |
Sponsored Links (Register now to hide all advertisements) |
|
01-09-2024, 04:53 AM | #3 |
Senior Member
Join Date: Aug 2020
Posts: 145
|
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.
Last edited by 69a; 01-09-2024 at 08:10 AM. |
01-09-2024, 12:00 PM | #4 |
Senior Member
Join Date: Jan 2019
Location: Chicago
Posts: 732
|
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. Last edited by JayChicago; 01-09-2024 at 12:11 PM. |
01-09-2024, 01:24 PM | #5 |
Senior Member
Join Date: Sep 2014
Location: Sask. Canada
Posts: 2,424
|
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
__________________
https://www.youtube.com/user/roosty6/videos |
01-09-2024, 01:27 PM | #6 | |
Senior Member
Join Date: May 2010
Location: Wisconsin, USA
Posts: 9,010
|
Re: 6-Volt Jump Start
Sponsored Links (Register now to hide all advertisements)
Quote:
Positive always goes to positive regardless of grounding.
__________________
"I can explain it for you. However, I can't understand it for you". |
|
01-09-2024, 02:58 PM | #7 |
Senior Member
Join Date: May 2010
Location: Oregon
Posts: 5,966
|
Re: 6-Volt Jump Start
Don't forget they also can be started with a good ole hand crank! I believe.
|
01-09-2024, 06:10 PM | #8 |
Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,320
|
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.
|
01-11-2024, 04:55 AM | #9 |
Senior Member
Join Date: Sep 2013
Location: Dighton, Mass
Posts: 1,230
|
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.
|
01-11-2024, 08:35 AM | #10 |
Senior Member
Join Date: Jul 2010
Location: Conifer, Colorado
Posts: 2,431
|
Re: 6-Volt Jump Start
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?
|
01-11-2024, 09:57 AM | #11 |
Senior Member
Join Date: Sep 2014
Location: Sask. Canada
Posts: 2,424
|
Re: 6-Volt Jump Start
I don't know if this falls into the category of old wives tales but many years ago I was warned to never boost a six volt battery with a twelve volt battery or it could blow up the battery showering you and your vehicle in battery acid. That is reason enough for me to by pass the six volt battery when boosting with twelve.
__________________
https://www.youtube.com/user/roosty6/videos |
01-11-2024, 12:12 PM | #12 |
Senior Member
Join Date: May 2012
Location: u-rah-rah-Wisconsin
Posts: 1,137
|
Re: 6-Volt Jump Start
This has been my experience - 12v jump, don't dawdle, zero issues.
__________________
19 and 49 F1 - jes' like Henry II built 1946 Deluxe - as Henry built it |
01-11-2024, 02:42 PM | #13 | |
Senior Member
Join Date: Aug 2020
Posts: 145
|
Re: 6-Volt Jump Start
Quote:
|
|
01-11-2024, 03:47 PM | #14 |
Senior Member
Join Date: Jul 2010
Location: Conifer, Colorado
Posts: 2,431
|
Re: 6-Volt Jump Start
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. |
01-11-2024, 05:30 PM | #15 | |
Senior Member
Join Date: May 2015
Posts: 8,166
|
Re: 6-Volt Jump Start
Quote:
__________________
The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
|
01-11-2024, 10:43 PM | #16 | |
Senior Member
Join Date: Sep 2014
Location: Sask. Canada
Posts: 2,424
|
Re: 6-Volt Jump Start
Quote:
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.
__________________
https://www.youtube.com/user/roosty6/videos |
|
01-12-2024, 08:09 AM | #17 |
Senior Member
Join Date: Jun 2014
Location: Land of Lincoln
Posts: 3,131
|
Re: 6-Volt Jump Start
The jumper boxes are not designed to crank a dead car, they are designed to put electrons back into your dead battery 6,8,12 volts. My SIL was using my jump box, he didn’t follow the instructions on the box, he destroyed the box , the tiny little battery CAN NOT crank a dead vehicle period !
__________________
Don't force it with a little hammer tap, tap, tap get a bigger hammer tap done |
01-12-2024, 09:52 AM | #18 | |
Senior Member
Join Date: Jul 2010
Location: Conifer, Colorado
Posts: 2,431
|
Re: 6-Volt Jump Start
Quote:
Stay warm. |
|
01-12-2024, 02:42 PM | #19 | |
Senior Member
Join Date: Sep 2013
Location: Dighton, Mass
Posts: 1,230
|
Re: 6-Volt Jump Start
Quote:
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 |
|
01-12-2024, 07:16 PM | #20 |
Senior Member
Join Date: Jul 2010
Location: Conifer, Colorado
Posts: 2,431
|
Re: 6-Volt Jump Start
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.
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|