Single reason only front marker lights not work on a 74?

[ramairthree]

I have virtually all lights functioning.
There are things like courtesy lights, trunk light, glove box light, etc. that my car does not have.

I  have the seat belt safety jump off under the hood.
I have an Edelbrock so my choker heater is removed and the lead taped off.

All rear turn, hazzard, brake, reverse
All interior (that I have, dome, gauges, console, panels)
Front high and low,
turns, hazzards

(there is a glitch off and on in my front driver's turn signal- giving a solid indicator light and non working turn signal, telling me the wire going to the turn signal itself power most have a crack, or something going on in there.)

I also need to sort out my horn, appears I am good from front of fire wall to horn (green with red line), so that should be under the dash.

Trying to figure out what would be the single reason all lights working EXCEPT both front side marker lights.

Any info appreciated.

[maxwellwedge]

A solid non blink on your dash turn signal lamp usually translates to a bulb....either a bad contact, burnt or wrong base bulb. Grounds are the next biggest reason. Did you check them with a meter?

[Nacho-RT74]

If you have front parking lights working and not sides, is just a wire, socket or bulb related problem, since the pigtail for these is spliced from front parking lights, positive pole at least