Ignition woes

I understand your post. I have pulled the bulk head connector and cleaned the the pins inside and out. I have done the things you all have mentioned . I have checked voltage at the starter relay and the coil . I get 12.3 at the big lug on the starter relay and 10.7 at the smaller lug right below the big one while cranking as well as the coil while cranking but no spark. So for some to say that I don't understand?:banghead: