QUOTE(Stingbee @ May 10 2020, 08:40 PM)
My 76 turn signal lamps do flash correctly, but the tach green light only comes on once, never flashes in the tach....Is this normal? If not, what do you think it may be? I hear it clicking, but it doesn't blink in the tachometer.
This is a common failure in 50 year old 914 flashers. There's a secondary coil activated by the external turnsignal bulb current. Over time this secondary coil loses its efficiency and you only get 1, 2, or no flashes of the tachometer turnsignal indicators. You need a new flasher relay.
I'm not sure if the OEM flasher relay is still available. You can replace the relay with an LED-compatible EP26 relay which is widely available. The only thing with the off the shelf EP26 is pin C2 which drives the turnsignal indicator is not connected. I resell EP26 with pin C2 connected for the indicator. You can do the mod yourself if you want. I show where to make the connection on my website.