Is there a test for a CDI when it is out of an engine by measuring the readings from the 4 pin input plug ?? I bought a new CDI when it turned out the stator was defective. I would now like to check the old CDI without going through all the trouble of reinstalling it in the engine again. Can you check the resistance of the input pins to deterine a faulty unit ??<br />the cdi is an Evinrude 586650..My dealer told me that there isn't an after market unit for this CDI .Is this correct ??