Tic toc tac wiring question

[My9302002]

69 Charger, tic toc tac.....
Trying to find out if the wiring is correct. There are two "main" outputs in the center of the back of the tac. The longer stud towards the top and the lower connector with the male spade on it. Which one is 12v power and which one is tach output?
Thanks in advance....
(I think the PO wired them backwards, but I want to double check.

[My9302002]

Bump
Anyone?

[tan top]

 
   http://www.dodgecharger.com/forum/index.php/topic,101117.0.html

[My9302002]

Yup,
Saw that thread... Then upon doing the
rest of the searches saw a tac labeled 12v
on the bottom terminal and the output on
the top terminal!!!!
Go figure...
I traced the wires to the Msd output, checked
continuity on what turned out to be a red
wire that someone spliced into the tac
output and hooked it up the way 69 rt
had in his diagram... All is well and the
Tac works!!
Yay