Need suggestions on SMALL 12 volt starter solenoid for 1955 RDE-17 25 Hp Johnson

[outboardnut]

That is what I was planning to do. I know nothing about this subject . I am just going on what I have found on this site.
Speaking of which of these two drawing is correct?
Am I able to use this resistor?
https://www.ebay.com/itm/Acdelco-C1101-Ballast-Resistor/182989239964

[nj-boatbuilder57]

That schematic makes it look pretty simple to "just put a resistor in line", but there’s a bit more to it than that. You’re looking at a sizeable resistor & a fair amount of heat dissipation…..

The math used to select a resistor isn’t hard, but it’s essential that it’s done right. Before you do anything, you need to know the current that your choke draws. Knowing that, I could assist with the numbers….

[outboardnut]

Once I pull the choke solenoid I will let you know.
Which drawing is correct?

[chris-p]

Use the second drawing Frank edited. Pretty straight forward. Done a ton of them.

[billy-j]

Why don’t you just change your 6V solenoid for a later model 12V one from a 1957 or later engine ?

[Buccaneer]

Somewhere on this site was mentioned…..
———————
Aftermarket Replacement Electrical Ignition Resistor (0.6 OHM Resistor) made to fit Ford Tractor models: 2N, 8N, 9N with 12 volt conversion (1939-1950).
Used in alternator conversion kits.
Replace Part Number: 8NE10306
————————————————
Here’s one ………..
http://www.yesterdaystractors.com/8NE10 … r_3307.htm

quote outboardnut:

That is what I was planning to do. I know nothing about this subject . I am just going on what I have found on this site.
Speaking of which of these two drawing is correct?
Am I able to use this resistor?
https://www.ebay.com/itm/Acdelco-C1101-Ballast-Resistor/182989239964

Prepare to be boarded!

[bill-mcnamara]

Converted my twin ’56 Javelins last year as described above, with parts as mentioned, absolutely no issues.
I didn’t mount under the cowls though, used two of the later style square boxes and located the resistor and mercury solenoid inside them.
Neat and accessible, no noticeable heat as I assume that the box is a bit of a heat sink? Its only activated for a few seconds, as the 12V nicely spins the 6V starter.
Bill.

[outboardnut]

Billy
https://www.ebay.com/sch/i.html?_from=R … itleDesc=0
versus
https://www.ebay.com/itm/Acdelco-C1101- … 2989239964

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