no spark please help

You are working too hard at this. The first thing to do is isolate whether the fault is on the primary or the secondary side of the system. Primary is battery, ignition switch, ballast resistor, ignition coil primary, coil switching device, either mechanical or electronic. Secondary is ignition coil secondary, distributor rotor and cap, spark plug wires, spark plugs.

Separate the system at the ignition coil. Check for power at the coil positive with the engine cranking, and power switching on and off at the coil negative, also with the engine cranking. If you have both, the primary is okay and the fault is on the secondary side. If both of the above are not true then the fault is on the primary side.

It would be helpful if you posted what type of ignition system you have when asking for help, i.e., mechanical (points), OE electronic or aftermarket electronic. I assume you have electronic since you changed the "orange box".