Hot Rods Sun tach transmitter needed ?

found a ol homemade gauge panel with 2 sw gauges and a Sun tach , hopefully someone can help identify the year and if a transmitter will be needed for the tach ....... numbers 621 41 331 ,
range 10,000 ..........

 

Depends on engine

 

Could you post a picture of the whole works?

 

I believe what Brokenspoke said, more directly the tach will work with any SW transmitter "for the engine it's used on" ie 4,6, or 8 cal. magneto or not, 6 or 12 volts. A picture is worth a thousand words.

Pat

 

I’ve got a 12 volt 6 cylinder I’ll probably never use.

 

thank you all ...............