tac hook up

[hcharger]

 


Hooked up lots of tacs  to standard ign systems, but  changed one car over to electronic   (mopar) ignition.  The instructions say   to - on coil for standard ign and see  manufacture instructions for electonic.  I dont want to fry my new tac  but from best I can figure even with the mopar electronic ignition it should still go to the - on coil??? any ideas  or  help!!
Thanks

[Nacho-RT74]

yes.

only diff would it be on aftermarket ignitions such as MSD, what does provide a tach source on ign box itself ( and not every tach works, need a compatible one )

[hcharger]

Thanks   Just wanted to check  as it says  no warranty  if you wire it wrong.  I know from ecxperiance that a wrong wire fries things   in milly seconds
Thanks again