Hello I have a 1991 Merc Force 150hp with the model #1501X91B and I am having a no spark to all cylinder problem. I was wondering if I was to change out the merc components such as switch box,cd pack,and coil assembly with good 1989 Chrysler Force components if it would be compatible and fix the problem

unplug the black yellow wire and check for spark

Thank You for your reply I have resolved the no spark issue but while doing I did not track the wiring code from the control box to the coils. I have 5 wires which are color coded the wires are green with various colored stripes 1 with white,1 with red, 1 solid green,1 with black and 1 with yellow. Would you happen to know or where I can find the proper wire to coil info?