Re: Charging System Question
OK, update. The tech at the dealership said pretty much the same thing. He said that 14.4 volts while the bike is running means the system is charging just fine. I asked him why it didn't bump up to 15.5 when the bike was revved to 5000 rpm and his first response was that he has never seen a Honda sportbike put out that much voltage regardless of rpm. He also asked if I had been doing all of this testing with a battery that had been just taken off of the battery tester and I told him yes. he told me that further told him that the reg rec was doing it's job and sensing that the battery was full so it wasn't letting any more than 14.4 volts get to the battery.
So, he told me that it sounded like I had a "key off draw" meaning something is drawing current when the key is in the off position and draining the battery. He told me that I needed to put my multi meter on amps and take the negative lead off of the battery and put the probed in series with the negative cable and negative post on the battery. He told me if it read more thn .02 miliamps, then I had too much current draw and that would drain the battery.
So, I look at my multi meter (remember I said I'm an idiot when it comes to these things) and it doesn't say amperage anywhere on it. The service manual refers to doing this test with an ameter. My multi meter does have DC current measuring on it, is this the same as amperage? I attempted to put it in series on all three of the settings it has for DC current but it doesn't read anything. It's got settings for 200m, 20m, and 2000 something.
So I figure I'm not doing any good with that so I go to dattaway's suggestion and put an LED bulb in series with the negative cable and post and it lit up. I begin pulling fuses 1 by 1 to try to isolate the wiring system that the current draw is in and, low and behold, the last fuse I pull, the bulb doesn't light. Here's the caveat. The fuse happens to be for the clock and fan. The clock needs constant power for it's memory but, is that enough to begin to drain the battery? Without knowing how to test for current draw, I don't know how much current it is drawing. I also don't know why this would be an issue all of a sudden when my bike did just fine up until a few months ago and every other 954 has the same clock.
I also tested the bike running with the stator connector unhooked and it showed a constant 12 volts across the battery terminals and showed the same with the reg/rec unhooked. Suggestions? Or, somebody help this idiot out on how to use and read a multi meter. Thanks.