Headlights not working

I restored my grandfather's 8N several years ago. Wanting to get the headlights working. They will work if I run a separate ground wire to the tractor chassis. But, won't work without the ground wire. Is this a matter of too much paint? I'm thinking that the paint is not allowing the light to ground?

Follow Ups:

• Re: Headlights not working - K.LaRue-VA 20:29:37 11/22/22 (0)
• Re: Headlights not working - Bob in KS 16:50:23 11/15/22 (0)
• Re: Headlights not working - Dean 13:46:50 11/15/22 (0)

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