aftermarket battery

[Yamamike]

OK so I have the red warning light flashing and the battery icon lit. PO said it was cuz he installed an aftermarket "maintenance free" battery which does not accept the sending unit for electrolyte level. Read the thread explaining how to bypass with a resistor. Tried both 1k ohm and 2.2k ohm resistors with no success. Ayone have any other suggestions?

[KenP]

Try this...

 

http://www.venturerider.org/forum/showthread.php?t=489

[skydoc_17]

Or This:

 

 

http://www.venturerider.org/classifieds/showproduct.php?product=3766&title=first-genbattery-icon-bypass-lead-kit-21&cat=22

[bkuhr]

OK so I have the red warning light flashing and the battery icon lit. PO said it was cuz he installed an aftermarket "maintenance free" battery which does not accept the sending unit for electrolyte level. Read the thread explaining how to bypass with a resistor. Tried both 1k ohm and 2.2k ohm resistors with no success. Ayone have any other suggestions?

 

Likely PO tried to cancel the battery light by hooking straight to 12v without resistor and has damaged the CMS.

Here is an option for repair

http://www.venturerider.org/forum/showthread.php?t=63495&highlight=repair

[Yamamike]

Try this...

 

http://www.venturerider.org/forum/showthread.php?t=489

 

This is what I tried but thanks!

[Trader]

DId you ensure that when you installed the resistor that you did it in the right direction?

 

I know they are directional and I THINK the gold ring on the resistor has to be towards the battery.

 

Could someone verify that for me....I wouldn't want to mislead anyone

 

If nothing else a bit of electrical tape over the red light works!

[Yamamike]

DId you ensure that when you installed the resistor that you did it in the right direction?

 

I know they are directional and I THINK the gold ring on the resistor has to be towards the battery.

 

Could someone verify that for me....I wouldn't want to mislead anyone

 

If nothing else a bit of electrical tape over the red light works!

 

I think you're confusing a resistor with a diode. As far as I know resistors are all bi-directional but I could be wrong. Hey it happened twice just this year:322:.

[Freebird]

No, you are exactly right. Resistors are NOT directional. Diodes are.

[Trader]

so all that squinting in lousy light trying to determine which was brown and which was gold was for nothing!!!!!!!

 

Hmmm....well at least I learned something.

[kevin-vic-b.c.]

Hmmm....well at least I learned something.

 

That is what happens around here... at least when they are not twisting you around or pulling your leg or eating ice cream or..... well all those other things that happen around here.

[Ozlander]

I just drill a 3/8" hole in the third cell and RTV the probe into it. Been working for 20 years.

[Yamamike]

Hmmm...I do have the probe! I just may give that a try.

[Yammer Dan]

I don't think you can do that with glass matt battery

[Yammer Dan]

Might ruin battery

[Rocket]

I don't think you can do that with glass matt battery

 

 

nope, wet cell only.......

[Yamamike]

That's what I have...wet cell that is.

[Yammer Dan]

It doesn't have extra hole for probe?

[Yammer Dan]

Been a while since I did that. I don't think you want probe to touch plates.

[skydoc_17]

Hey Mike,

If you want to insert the probe in a wet cell battery that does not have the "probe hole",

remove the cell fill cap closest to the center of the battery, wrap the probe with common black electrical tape until the probe body diameter is a "push fit" into the cell fill hole. Increase or decrease the wraps of the tape until the probe fits snugly into the cell fill hole, and it's a done deal.

I also wanted to mention that the CMU is NOT supposed to see a direct 12 volts. If the probe wire has been directly connected to a 12 volt source, (like directly to the battery)

The CMU has been damaged, and even installing the probe into the battery properly will not make the light go out. Unless you have the gift of circuit board troubleshooting at the component level, (which I do not have) you will need to pick up another First Gen. MKI CMU from a used dash unit. The MKI (1983 to 1985) and the MKII (1986 to 1993) CMU's are different. I hope the install of the probe cures this issue for you.

Earl

[Yamamike]

Well I guess if neither the 1k or 2k ohm resistor did the trick, it ain't likely the probe will huh?

Anyone know what I should expect to pay for a CMU board?

[Yamamike]

Would a complete MK2 dash unit work on a MK1??

[Marcarl]

Well I guess if neither the 1k or 2k ohm resistor did the trick, it ain't likely the probe will huh?

Anyone know what I should expect to pay for a CMU board?

Check to make sure the original resistor is not in there, Two resistors in line don't make for a good tool to do this job.

[Yamamike]

I will but if it is it would have to be in what appears to be the original wire harness.

Thanks

[bilko1]

I just drill a 3/8" hole in the third cell and RTV the probe into it. Been working for 20 years.

I have done the same thing. been in place since 99, and 3 batterys.

[Flyinfool]

My bike already had the probe removed and the resistor installed so I do not even know what the probe looks like.

Is it an electrical probe or an optical probe?

If it is optical it would have a 45° angled point of clear plastic that goes into the acid. If it is an electrical probe it will have 2 metal contacts that go into the acid.

 

If it is an optical probe you could test it by dipping it in water.

If it is electrical probe, You would need to figure out just how it is being used to come up with an appropriate test.

I can not tell for sure from the service manual and schematics, but I think it is an electrical sensor that is tapping either 4 or 6V off of the battery.