A couple of quick questions about the DS2 conversion

[central_texan]

I have decided to make the conversion from points to the DS2 based on recommendations from elsewhere in these forums. I have studied the posts and explanations about how to do the conversion. A couple of things are not completely clear to me and I would like to clarify them before starting the conversion.

From studying several of the schematics of the hookup, it appears that the only new wire that MUST be run is the red from the module to the 'R' terminal on the ignition switch.
QUESTION #1-Do I have to go all the way to the switch to make this connection or can I connect to any wire with a full 12 volts when ignition switch is ON? ? ?

QUESTION #2-The schematics I have found show that the ONLY wire going to the '-' side of the coil is the green from the module. That is shown to be a tach driver. Is that right? ? Does it need only the one primary wire to work? On the points wiring, the '-' wire goes to the distrbutor and the '+' is from the ignition switch (this wire stays in place on the conversion). Then if I do not have a tach, the '-' post on the coil has NO wire running to it?

I DO plan to run the white from the module to the 'S' terminal of the starter relay. Otherwise, the wiring appears to be straightforward.

 

[rbohm]

I have decided to make the conversion from points to the DS2 based on recommendations from elsewhere in these forums. I have studied the posts and explanations about how to do the conversion. A couple of things are not completely clear to me and I would like to clarify them before starting the conversion.

From studying several of the schematics of the hookup, it appears that the only new wire that MUST be run is the red from the module to the 'R' terminal on the ignition switch.
QUESTION #1-Do I have to go all the way to the switch to make this connection or can I connect to any wire with a full 12 volts when ignition switch is ON? ? ?

you can use any switched 12v source. however when ever i do the duraspark conversion, i just use the same wire that brings power to the coil, and have never had any issues.

QUESTION #2-The schematics I have found show that the ONLY wire going to the '-' side of the coil is the green from the module. That is shown to be a tach driver. Is that right? ? Does it need only the one primary wire to work? On the points wiring, the '-' wire goes to the distrbutor and the '+' is from the ignition switch (this wire stays in place on the conversion). Then if I do not have a tach, the '-' post on the coil has NO wire running to it?

I DO plan to run the white from the module to the 'S' terminal of the starter relay. Otherwise, the wiring appears to be straightforward.

you have to run the green wire to the coil. it is used by the duraspark box as a ground wire going through a transistor to make and break the circuit to collapse the magnetic field that builds up in the coil. just like the points do in a point controlled distributor.