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13.5 Volts across battery..with bike OFF!!

  • Thread starter Thread starter Big6ft6
  • Start date Start date
If you put your high beam on for 45 minutes, then your battery would be just about flat... so no wonder the voltage would be reading lower.

But, enough of that... have you checked the *resistance* of the various wires we've been talking about? :-\"
 
tfb said:
If you put your high beam on for 45 minutes, then your battery would be just about flat... so no wonder the voltage would be reading lower.

But, enough of that... have you checked the *resistance* of the various wires we've been talking about? :-\"
Click to expand...

tfb

I gues I assumed seeing no voltage drop along the wires would mean no increase in resistance? So I havn't actuall measured resistnace. What is a good resistance? What is too much?

I did do all the tests (including resistance tests) in the stator papers and all of the values were in line except I didn't do the diode tests of the r/r becuase I wasn't sure how.
 
You're after a resistance of zero. Infinite resistance means no connection at all. Anything in-between means a bad connection.
 
tfb said:
You're after a resistance of zero. Infinite resistance means no connection at all. Anything in-between means a bad connection.
Click to expand...

Keeping in mind that there are no superconductors involved in the wiring harness, there should be "some" resistance across the wires. If there is less than 1 ohm you should be okay. More than that and there is definitely corrosion or a bad wire.
 
I've checked my gs450 charging system today, and I get the same reading 17.6 at 1500 rpms and 13.5 with the bike off. battery about 2 months old.
Claude

1987 GS450l
 
GS850 Coug, right you are about the resistance being not quite zero for a good connection!

chronoman, 17.6 volts is not good! Go to the Stator Papers here on the GS Resources and follow them through systematically. Basically the high voltage is either a fried regulator or bad connections somewhere. Happy hunting. :)
 
chronoman said:
I've checked my gs450 charging system today, and I get the same reading 17.6 at 1500 rpms and 13.5 with the bike off. battery about 2 months old.
Claude

1987 GS450l
Click to expand...

Chronoman...I'm so so so sorry...I will pray for you tonight.[-o<
 
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