1996 Mercury 200 EFI doesn't seem to be charging

[hbuilder43]

How do I test my '96 Mercury 200 EFI for charging failure? And where is the regulator, rectifier? Is there a schematic somewhere that I could download?
Thanks

 

[Barnacle_Bill]

Re: 1996 Mercury 200 EFI doesn't seem to be charging

You have a combination rectifier/regulator. If you are going to do that type work on your motor I highly recommend you get a manual. It will tell you how to check that unit. For a quick check to see if its working, check the voltage at the battery with the motor off, then check it again with the motor running. As RPMs increase, you will see an increase in voltage if all is well. Free info like that on-line is as rare as hen's teeth due to copy right laws. Your local library is a possible source for that info.

 

[hbuilder43]

Re: 1996 Mercury 200 EFI doesn't seem to be charging

Thanks for the comeback, Bill. I think this problem may have started after connecting starting battery cables backward. If that is the case, what would the most likely problem be?
Thanks

 

[Barnacle_Bill]

Re: 1996 Mercury 200 EFI doesn't seem to be charging

You blew some of the diodes in the rectifier. You will have to replace the rectifier/regulator.

 

[Barnacle_Bill]

Re: 1996 Mercury 200 EFI doesn't seem to be charging

Look at the post by Laddies here. http://forums.iboats.com/showthread.php?t=332907&highlight=test+rectifier

 

[hbuilder43]

Re: 1996 Mercury 200 EFI doesn't seem to be charging

Thanks, you guys. Will work on that.