I'm gonna suggest that you tear out whatever cobbled up mess of a wiring harness that has, and buy a nice new one.
Here's a good option:
https://xtrememotorworks.com/Wiring%20Kits.html
For ignition, assuming this is an electric start machine, be sure you have an external coil. It will not function without a coil. It will also not function unless 12 volts from the battery are supplied to the positive side of the coil. On the negative side, the points and condenser attach. Here's where you can find a wiring diagram:
https://www.onlycubcadets.net/forum/showthread.php?t=35
hope this helps!
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'70 107 with k301 engine swap
'71 106 with 38" deck
'70 147
R with factory replacement k321, 42" deck
'61 Original with 38" timed deck
'63 70 "pinkie"
1863 with 54" deck
'46 Farmall H, '50 Farmall Cub
105 x2 (parts)