Hookin up aftermarket Tac

[Redbrd]

Hey my bud with 93 camaro wants to know where and if he can hook up aftermarket tac,where are the leads he should use as far as location

[93lt1z28]

I have an autometer monster tach, and i mounted mine on the dash above where the radio area is.

[93lt1z28]

Sorry to the right a little bit.