Shadetree dan

Can anyone tell me if there is a way to test a spark control module before I go buy one or an eec or other parts I don't need .done that once before got that t-shirt, ended up being ecc after buying everything else.have tested distributor pickup seems good spark is real faint at plug,have 2 extra coils I've tried, still same result tk is 92 model w/5.0 .could module or eec cause this problem, any suggestions would be appreciated.