I finished this project today. Very happy to share with you what we did. Wife don't care so I need to share with somebody.
We (my 8 year old too) removed front parking light wires from the car. We replaced sockets with new inners we got at Napa. The same sockets became double filament. I still have parking lights and now have turn signals too.
On eBay, I found a turn signal wire cover and two clips that came from a 1955-1957 Dodge Power Wagon. We bead blasted the cover and two clips and painted it to match my steering column. We removed the plug cover in lower steering bracket mount. We mounted the aftermarket switch, covered the wires, and then begin wiring. I was expecting nightmare hooking it up, but all in all it took us three hours.
The junction under the dash Fid mentions was perfect for brake light connection. I ran a wire out the firewall and inside the box frame all the way to rear of car. Up into the trunk by the spare tire well with a rubber grommet, and I found the second junction by the left rear taillight connection in the trunk. The new wire ran to back of car was connected into that junction.
The new switch has the lighted tip on the lever. I considered what Corsairdeluxe mentioned about using the trouble lights, but We stuck with the lighted tip option.
Only problem We ran into, We had been forewarned by FID. I had a very weak light on the turn signal indicator. Finally, The third flasher was a winner. It flashes loud and the light is nice and bright.
Posting picture of the column with the new wire cover with two clips. Came out great, and the indicator light is nice and bright. Like Fid said, be sure to use Heavy duty flasher!