First, all my lights work, including brakes, running lights etc. The right-turn signals work fine, but when I use the left turn signal, the left-front signal stays lit, and the left-rear signal goes dark and neither left signals blink. I've replaced the bulbs. I'm assuming that the problem is with the left-read wire the goes from the signal to the light. But the wiring diagram is a tad confusing.
It's a 1960 bug.
TIA,
John