72 C20 Wiring

[Rajin]

I need some wiring help.

My hazard lights are acting erratically. I haven't tested the turn signals as the lever is broken and I'm currently waiting on a new one to arrive.

The hazard lights work when they are turned on, and the running lights are off.

When the hazard lights are one, and the running lights are on. The hazards no longer blink, and the left turn signal indicator on my dash comes on steady.

Any suggestions on where I should be looking for a wiring fault?