RE: DA Engine with a 3W ignition??
If it is the old style 3W you should be able to use it, I let a buddy use my spare 3W ignition when his DA ignition went out and ended using a DA ignition on my 3W 150 when I plugged the battery in backwards and fried my 3W ignition. If the 3W ignition is the new style (the one with the tach lead) it will not work.