Finally got me a OMC manual for this motor and my schematic I posted earlier stands good by the book. Anyway, I won a NOS OMC module for this engine on EBay and could not wait to get it, but when I did I bench tested it first and it FAILED, then I installed it on my motor and it failed the light bulb test and the old "hold the wire and crank test" as well. Well, I was a bit ticked but they let me send it back but I still had the same problem at hand, NO High Voltage!...so I decided to try experimenting with some SCR modules.(Not CD). The one I tried was from a dodge van year, 1974. This model used a pickup coil to fire the module but I had the wiring diagram for it and tried triggering it by hooking a 700 ohm resistor across the (+) side of the trigger and ground, then I could take a small screwdriver and touch the (+) side to ground (-) and it fired! hooked it up to a coil and HV! I however did not pay attention WHEN IT FIRED though. I hooked it up to the outboard and connected the coil, coil resistor, SCR module, points wire and went to start it........well, it fired all right...TOO LATE! It would backfire like a shotgun! I then took it off and checked it again on the bench an it fired when it made....the direct opposite of the original so I made up my mind I was then going to try the standard "coil, points, condenser setup as an auto engine. After reading many documents I found that a 0.2uf capacitor was about the right capacitance so I installed this across the negative (-) coil terminal to ground. The coil I used is a standard 12V chrysler coil (not a WILD coil) and with a standard 0.5 ohm coil resistor in series with the coil. I left the points set at the factory 0.010" same as the setting for the original CD. Also after reading in my old MERCURY book, I found that on the old coil type ignitions that mercury used, they used a pretty hot plug, so I changed the plugs to J8J champion.....bottom line is, it now runs GREAT!!!<br />Ignition system current draw is only about 3 amps! That leaves PLENTY of reserve for charging etc. from the 9 amp altenator. This motor will now crank in approx 2 seconds from dead cold! Just choke and turn and it's gone man!<br />I might (just to check the results) change the points to 0.020" for a test to see what happens. Oh by the way, I checked the dwell with the points set at the original 0.010" and dwell was approx 50 degrees can anyone tell me what dwell I should aim for?? I plan on making a drawing of this for whoever would like to see it along with the part numbers which came from Advance Auto (except capacitor is a mallory).........
