Fusebox Melted - Advice Needed from Electrical Gurus

[koolaid_kid]

An R/R is a quick swap and something you want to fix before it takes out your stator.

[sedelen]

Here's a pic of mine...nothing larger than 15.



Lots of good electrical info on this thread.

Ed

Do you think that 15 amp fuse in the 10 amp slot is a good thing?
Just saying.

[koolaid_kid]

There should only be one 15 Amp fuse, to the headlight IIRC.

[Redman]

There should only be one 15 Amp fuse, to the headlight IIRC.

In stock setup the MAIN is only 15 amp.


THe OP wiring and fuse arrangement is not stock. He has more fuses than stock, so has things divided up differently.




Don,
THe heat is not necessarily caused by too much current. The heat can be caused by a normal amount of current flowing thru a bad connection (some resistance, where should be no resistance). Current thru a resistance is an electric heater, like a toaster element.

Looks like you need a replacement fuse block, or at least for that one circuit for sure. And the some of the others look suspect now with the smoke residue.

.

[Suzuki_Don]

In stock setup the MAIN is only 15 amp.


THe OP wiring and fuse arrangement is not stock. He has more fuses than stock, so has things divided up differently.




Don,
THe heat is not necessarily caused by too much current. The heat can be caused by a normal amount of current flowing thru a bad connection (some resistance, where should be no resistance). Current thru a resistance is an electric heater, like a toaster element.

Looks like you need a replacement fuse block, or at least for that one circuit for sure. And the some of the others look suspect now with the smoke residue.

.

Yes Redman, I will definitely be replacing the whole fuse panel with a new one.

Thanks for all the contributions -- Good Info all round.

[GSXR7ED]

An R/R is a quick swap and something you want to fix before it takes out your stator.

Thanks for the advice. I've been riding with this set since January so not sure how it has affected the stator.

Do you think that 15 amp fuse in the 10 amp slot is a good thing?
Just saying.

I noticed that too after I took the photo...good eye! I'll get the correct fuse for it.


OP, this turned out to be a good lesson for me. Thanks for sharing your story.


Ed

[Suzuki_Don]

Thanks for the advice. I've been riding with this set since January so not sure how it has affected the stator.



I noticed that too after I took the photo...good eye! I'll get the correct fuse for it.


OP, this turned out to be a good lesson for me. Thanks for sharing your story.


Ed

No problem Ed, glad to.

[rustybronco]

Yes Redman, I will definitely be replacing the whole fuse panel with a new one.

I know it is an el cheapo fusebox, but we don't have the large selection of good quality fuseboxes over here as you guys do in the US.

So I think a new fuse box and a 15A fuse should do the trick.

Make that a good quality fuse box which may have been all or part of the problem in the first place. It might also be a good idea to temporarily put an ammeter in line to check the current flowing through that circuit.

[koolaid_kid]

Make that a good quality fuse box which may have been all or part of the problem in the first place. It might also be a good idea to temporarily put an ammeter in line to check the current flowing through that circuit.

Not a bad idea about the ammeter, but keep in mind that the standard ammeter (over here anyway) has a limit of 10 Amps. If you choose to do this, take the ammeter apart and see what kind of fuse it has and get a couple of spares.
Best would be to use an inductive type which clamps over the wire instead of going in line.

[rustybronco]

I guess I'm a bit fortunate. I bought a used ammeter that reads to 30 amps (IIRC).

***edit***
You could also measure the current flowing across a shunt.

[OldVet66]

A little pricy but definitely good quality: http://easternbeaver.com/Main/Wiring...8.html#pc8only

[koolaid_kid]

It is pricey but very high quality. It may be too big to fit in the stock location, though.

[850GT_Rider]

It is pricey but very high quality. It may be too big to fit in the stock location, though.

Don't know about the OP's bike, but that Eastern Beaver 8-circuit box fit just fine on the same side as the OE glass fuse holder. Had to move it a bit, but it fit just fine.

I'm on the road right now, otherwise would post a pic.

[Suzuki_Don]

Don't know about the OP's bike, but that Eastern Beaver 8-circuit box fit just fine on the same side as the OE glass fuse holder. Had to move it a bit, but it fit just fine.

I'm on the road right now, otherwise would post a pic.

I am the OP, my name is Don.

On the '77 GS550 there was only ONE in-line fuse. No fusebox fitted originally. So space is at a premium under the RH cover.

[GSXR7ED]

R/R Result

That is a pretty crusty old looking R/R Have you you done the grounding mods? It all looks very stock.

If you think it is charging OK, then see if you can pass the revised Phase A tests.

I did the Phase A test and it passed. I previously ID'd this problem to the mechanic who ran the test back in January and the R/R was functioning correctly.

I bought my own multimeter (from Harbor Freight) and tested it yesterday with this result:


The 15 amp fuse was also replaced with a 10 so all is well in the charging department for my "T".



Ed