Hello,I'm getting no spark in a Mid 80's Merc. I've replaced the distributor module, rotor, cap, & coil. The only thing I believe that is left, is the Thunderbot IV ignition module. To test (the only way I could think of) I pushed 14 volts through the module from a jump box and I'm getting 7 out the other side. Is that normal or is there something else I should be looking at to fix? Any help would be sincerely appreciated, I'm dry docked and just missed a great weekend.Thank you!