I have a 1980 z-28. I just installed a new 350 crate engine. The first time I started I got spark. I needed to pull the distributor to realign. Now no spark. I have power at the distributor 12.5v. I installed a new ignition module. I checked the resistance at the coil 14k. is there any fuses that run to this? I would like to check ground but not sure how to do that. I have ground attached to the engine. What's going on. what do I check next?