I connected the red ( wire I added ) near the ingition switch, the brown wire is gone ( cut out of the harnes ), the left terminal has a red/blue wire connected to it and the white wire from the duraspark connectered on the "S" terminal and the solenoid is right side up. Car starts fine with while wire disconnected. Just wondering if I wired it right?

I have a 67 Mustang, just did the Duraspark up grade. I cut the pink wire fron the switch to about 3 inches and solderes my red wire to it. With the white wire connected to  starter relay terminal "S" The car starts in the run prosition and the started stays ingauged. Did I wire it wrong. Thanks for your help.