Driver Side Hazard Flashing When Off 1974 Plymouth Valiant Scamp

I replaced my destroyed turn signal switch with one from Amazon. Although the connector was a pain in the *** to get connected, I eventually got it. I only have one flasher right now, but when plugged into the turn signal circuit, everything works as expected. When plugged into the emergency flasher circuit, all four corners flash when the hazard switch is on, but when the hazard switch is off, I still get driver taillight, front turn signal and side marker flashing, although they seem dim. If flip the turn signal lever down (without the turn signal flasher plugged in), left lights go out, no more flashing. If I remove the front turn signal lamp while the hazard switch is off and left lights are dimly flashing, the flashing stops and side marker and rear lamp stay on. I've searched for shorts, but I'm starting to suspect the turn signal switch. Any ideas?