I decided to tune my 66 mustang 289 because it was not running very smooth. I put new points, condenser, wires, cap, rotor and spark plugs. I started it up and it still did not run good. It sounded like some of the cylinders were not firing 100%. I checked the coil and it was week, so I bought a new one. The new one is slightly different. Instead of the post being marked with Dist, and Batt, it is marked with a - and + mark. I put the dist wire on the - side and the batt side to the + side. Now the motor has no spark at all.
Did I do something wrong?