AutoMeter tach wiring help!

[zyzzyx]

I have what I believe is a Model 438 AutoMeter tach from the late 70's. Anyone know how to wire this to a dual point
distributor? Maybe someone has a copy of an old instruction manual? Thanks! Here's a pic of the buisness end:

 

[pnora]

Should be the same as any other tach. Single or dual points do not matter. Keyed 12 volt feed, ground, negative side of ignition coil.

 

[pnora]

Unless that is some model of tach that is driven from a box of some sort. Looks like it might say do not change sender. What ever that means. Some mopar tachs like out of 66-67 had some sort of tach driver/sender box i believe.

 

[pnora]

Sun tachometers also has some sort of tachometer transmitter. That Autometer just seems odd esp. with all black wires. You might try calling them to see what the deal is.

 

[HALIFAXHOPS]

Early sun tachs usually SST's used a seperate sending unit. Good luck finding the mercury battery in them though.