Msd 6al Wiring Diagram Tach Output. These are the cylinder select wire loops. The tach output terminal produces a 12 volt square wave signal with a 20 duty cycle.
Wiring of street fire ignitions is the same as msd 6 series with the exception of the gray tach. The street fire orange connects to the coil positive terminal black connects to the coil negative terminal. This is mostly why i was confused.
The street fire orange connects to the coil positive terminal black connects to the coil negative terminal.
Connects to the tachometer trigger wire or other. I see a wiring diagram that shows a cd type coil with the 6al box. The tach output terminal produces a 12 volt square wave signal with a 20 duty cycle. Is that going to be thethis view of the mounted box reveals two wiring connections.