Curvy electrical problems
 

I have a 2000 X reg sv650s owned it since June 2011.

Last weekend my bike cut out and then refused to start again, sounded like a lazy starter/low battery. Eventually it was just clicking fast. Battery was taken out and charged on a smart charger. The bike was working for a few days until today. I was riding it home when my lcd odometer 'reset', like I had just had the ignition switched on, this was as I was moving at 50mph. The other symptom was the needles on the speedo and the rev counter were flicking up and down whilst at the same time the lcd was going blank. I managed to keep the engine running til i got home. After I switched it off it wouldn't start, not even a click from the starter relay etc. Both prior to the last time it broke down and today it was dry.

Any known faults I should look for?

Cheers in advance.

Re: Curvy electrical problems
 

maybe regulator rectifier gone kaput or a really bad earth is taking all power out the battery.

is your battery charging while the bike is running?

Re: Curvy electrical problems
 

Charge the battery again and buy/borrow a multimetre.A quick search on here (charging system)will tell you how to check it all.
Meantime check all your connections (battery/earths and connector boxes)to make sure everything is clean and tight.

Re: Curvy electrical problems
 

Make sure the battery terminals are tight.

There's a couple of points where the loom likes to rub through - at the headstock and particularly under the riders seat where the loom passes by the bolts that secure the seat. Check there for any damage to the loom.

Have you blown any fuses? Remember to check the main fuse - it's in the green box behind the RHS cover under the riders seat. Check the connections in that box are clean and secure (disconnect the battery first).

Worth checking the main earth is also clean/secure. It's at the back of the engine - you can see it from the RHS of bike looking behind the clutch cover.

Re: Curvy electrical problems
 

Excellent guys. Now got a few things to go on. Battery charging to do as suggested to check whether it's receiving a charge when running. I'll check the wiring whilst battery and seat are off.

Quick question. Does this bike have a plug on it into which all earths run and then distributed to the frame?

Cheers

Re: Curvy electrical problems
 

Not sure if you have had a look at this electrical fault finder but its worth a run through hth

Re: Curvy electrical problems
 

Guys,

Thanks for all the suggestions so far.

TamSV, no blown fuses. Wiring loom looks fine, certainly the outer surface isn't damaged at the suggested areas.

Today I put the charged up battery back in the bike, was registering 12.5v engine off, when started up - 13.5v when I put the lights on - 12v max.

Am I right in thinking that this is either battery or dodgy earth?

Secondly, if it was a dodgy earth, would it not drain straight away?

Sorry about all the questions, I am a total novice on this topic.

cheers

Re: Curvy electrical problems
 

That seems a little low.Have you tried testing the alternator output?With the meter set to AC test the three yellow wires that go from alternator to reg/rec,engine running at about 5000 rpm.Test each wire against the other----1-2 1-3 2-3 and you should get about 70 volts ac each time.If any is very different to the other two there is probably an alternator fault.Check all the relevant connections too.

Re: Curvy electrical problems
 

+1 on what BB says, do the tests and report back. How old is your battery? I had a similar problem see here

If AC tests OK then it sounds like the old favourite - duff reg/rec