I recently bought myself an EF, but I am having a very weird electrical problem. I found the LED on the ECU flashing 20 times then pausing. Is there a way of figuring out what is putting such a load on my electrical system?

 

Here is a way to troubleshoot Code 20.

 

what that ELD troubleshooting fails to address is before you suspect the ELD, you need to make sure that the alternator is good - over the years we have found that in almost all cases the Code 20 can be cured by installing a good alternator - the problem is not that something is overloading the circuit but rather that the alternator cannot provide the amperage that is required - usually a problem with the alternator diodes - aftermarket rebuilt alternators from Advance Auto, Autozone, etc. are garbage and installing one probably won't cure your problem - get a good Honda alternator - even used ones from a junkyard will last longer than one of the aftermarket rebuilt ones

 

Thank you both for your advice. I will be able to troubleshoot it tomorrow. I really appreciate your help.