Opinion on wiring

[13]

I wanted to run this by everyone. I will be attempting to to see if this motor will run. 12v neg. ground, hot wire to resistor then to (-) coil, (+) coil to ignition switch, switch to distributor. I won't be able to try it until after all the time up parts arrive, does this seem correct? This is onlyto see of it'll fire (hotwired)Thank you!

[Y-Blockhead]

Originally Posted by 13

I wanted to run this by everyone. I will be attempting to to see if this motor will run. 12v neg. ground, hot wire to resistor then to (-) coil, (+) coil to ignition switch, switch to distributor. I won't be able to try it until after all the time up parts arrive, does this seem correct? This is onlyto see of it'll fire (hotwired)Thank you!

If I am reading you correctly, I believe you have the coil wires switched. If it is negative ground, the negative side of the coil should be toward the distributor via the switch. In other words the Positive (hot wire) should be to the + side of the coil.

The way you have it is for a negative ground system.

It would probably start the way you have it wired but you will get a hotter spark if it is wired correctly.

[13]

Originally Posted by Y-Blockhead

If I am reading you correctly, I believe you have the coil wires switched. If it is negative ground, the negative side of the coil should be toward the distributor via the switch. In other words the Positive (hot wire) should be to the + side of the coil.

The way you have it is for a negative ground system.

It would probably start the way you have it wired but you will get a hotter spark if it is wired correctly.

So if I'm understanding you, all I need to do is switch the 2 coil wires and I'll be on the right path? Thank you!

[Y-Blockhead]

Yes... Always remember, points are to ground. So - ground, - side of coil to points. + ground, + side of coil to points.

[13]

Thanks so much. Now waiting on my order from Mike's. Hope she fires!

[burner31]

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These engines "want" to run.
Good luck to you, let us know.

[13]

Originally Posted by burner31

These engines "want" to run.
Good luck to you, let us know.

I will post my success, I have confidence she'll run!4

[johnbuckley]

these simple diagrams may help

[GerryAllen]

Diagrams awesome, big thank you.

Gerry, Birch Bay WA

[johnbuckley]

Thanks for that compliment Gerry...( no doubt some inaccuracies will be pointed out! ) I forgot to add the key to Fig 2 Possible Changes...
1. Polarity may have been changed.
2. It may be now 12 volts .
3.A fuse may be present
4. The wire to the coil may be avoid the ammeter ( as didi the very early Model As)
5and 6. wires to ammeter may be switched if polarity has been changed .
8. An ignition switch may have been inserted between junction box and coil.
9. A ballast resistor may be present..
10. The wires on the coil may be switched,
11. The pop out switch may have been replaced
13. “Modern” points which have the condenser on the upper plate may have been fitted

[13]

Can't get any simpler than that, thanks much!