Some wiring problems.

[Zonaman]

First question:

I want to wire a dome light switch at the driver's side door. Would you just find a door switch and wire it in sereis to the hot wire? Where can I get those switches?

Second Question:

Got side marker lights but no wires to them. No bulbs or the holders that fasten them into the back! No wires for them (that I can find) cut off anywhere. I'm told a '69 should be wired for that so I'm puzzled. Can these be wired correctly without getting a new harness and where would I get those holders for the bulbs?

Thank you.