Front turn signals not working

In the beginning post you stated "replaced flasher". There are 2 of them. Hazard flasher is a heavy duty type, to flash 4 bulbs, mounted at the steering column support. Signal flasher is a standard type mounted right side of ash tray hanger. You replaced the wrong one? Replace both = non question.
But then this part isn't correct either...

ChrisN68 said

V does have flashing power (between roughly 3-12v alternating) only when the right signal is on and the parking lights are on. It has no signal when lights are off.

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The signal circuit is supposed to get power from the ignition switch and not the headlight switch. I can't imagine this fault being at the headlight switch but it could be inside the fuse box. There are some very simple buss bars in there with male/female spade terminals. Those could be shifted/crossed.