Suzuki Bandit Electrical Fault Troubleshooting

[@hayleybell1382]

Dave. You fecking legend! I’ve got the exact same problem on a friends bike I’m restoring and your videos been a lifesaver! Keep em coming!

[@MotoMirius]

Cheers, hope that is going well for you! Skäl David

[@colinpreece3841]

Great bit of information and looking forward to your conclusion and hopefully the fix. I have had a similar problem and doing very much the same troubleshooting as you; however, I'm still none the wiser and still trying to solve it 😉👍👍

[@MotoMirius]

Glad it helped and hope you get there. With wiring it's just one wire at a time till you find the issue!

[@colinpreece3841]

@@MotoMirius I was going through the checking process earlier after I got home from work and as I tested the ignition process, I saw a whiff of smoke come from the starter relay solenoid, i haven't spotted it previously so I'm thinking the problem may now be coming from the solenoid or a wire connection to the solenoid... oh the Joy's of motorcycling, thank goodness we are a patient bunch 😂

[@sumatrajohnny]

Hi David, I just had a similar problem with my Intruder. I would use the kill switch and the bike would then refuse to start. Thought it was the start button for a while then realised that I had no problem starting if I didnt use the kill switch but turned off with the ignition. I recently stripped down the switch cluster and cleaned up the contacts and spring in the kill switch and the problem has now gone!.. Unfortunately replaced by another one but that's another story! You may of course also have a problem with your earth and the two problems together make it very hard to diagnose. Hope you get it sorted soon. Enjoying the videos, keep up the great work.

[@MotoMirius]

Cheers John. Back when I learnt to ride and kill switches new new dangled technology, we were taught not to use them. I’m sure I have an earth problem and once that’s sorted can look at starting. If I were a betting man I’d put money on either start or kill switches. Hope you are doing well. It’s going to be a while before I get to the next meet unfortunately 🙁. Skäl. David

[@sumatrajohnny]

I’m doing fine thanks David. We’re missing you!! It’ll be good to see you again when you’re sorted. The weather will have improved then as well!!!

[@MotoMirius]

Thanks John. I’m certainly hoping the weather will have improved by then!

[@seamusrice1865]

Hi,again thanks for your reply, somebody has been messing about with it before I got it, I was able to get a wiring diagram for a 1997 but different colours at the igniter box , like your good self I'll ponder on until I get a '92 wiring diagram, your an inspiration thanks an good 👍luck.

[@MotoMirius]

Thanks. Just remember that wiring is all one wire at a time - from the parts diagram it looks like there were four different wiring harnesses for the 1992 so it might be there were different colours anyway. If you can find the other ends of the wires you should be able to figure out which one is supposed to connect to which terminal, but good luck with that!

[@springy-2112]

Hey David i feel for ya i spent 6 hours replacing a tiny wire wed ..5 mins to chop in a new piece..6 hours to strip and rebuild the bike..it was hidden so deep in the loom..😣 👍👍☮☮❤❤

[@MotoMirius]

Cheers Springy. Hopefully it won’t come to that... but it probably will lol 😂 Skäl. David

[@springy-2112]

@@MotoMirius well i was lucky i only lost one indicator i didnt detract from anything else ..i started the investigation at the bulb and found the crushed wire deep in the loom had to strip the whole bike to the frame ...such fun..

[@samborambo9745]

I'm doing a 1996 gsfs 600 had massive pains I've bought pulse signal generator new equipment from America and all came down too a 100 ohm 1 watt resister I have no electrical tools and I just had to go ahead with the manual lol never knew about the resister till 2 weeks ago I found a video on KZbin a guy made a wiring plug to start it and it had a resister so always watch and learn and try do

[@MotoMirius]

Always more to learn about the electrical and electronics on bikes

[@samborambo9745]

It's good to learn all aspects to be honest at the time you really no nothing cause yiur brains is going 100 miles an hour

[@jonboy-kb1jj]

Hi David, do you have a wiring diagram? Have you tested the kill switch with the meter? I had the same problem with my old bandit and it was the kill switch earthing out when it shouldn’t be! Worth a delve into mate.

[@MotoMirius]

Thanks for that. Yes, I have a wiring diagram and I’ve extracted the starter circuit. But first I have to get power back which I hope is something simple 🤞 Skäl. David

[@jonboy-kb1jj]

Ok, but have a look at the kill switch, if you ride along and switch it off and on, you will get the loud backfire which you mentioned, my switch kept earthing out and I had the same symptoms you seem to be experiencing. I ended up replacing mine, it was beyond repair. Good luck mate.

[@MotoMirius]

Cheers for that. Yes, it’s on my list to test. I have one thing I want to check first because kill switch doesn’t cut out the lights and indicators. Then I need to dig into the the starter circuit and thanks yes, kill switch is a great suggestion. Skäl. David

[@piearm1271]

The greatest triumph of electricity it will flow no matter how tenuous the contact, the greatest weakness of electricity it will flow no matter how tenuous the contact, to paraphrase a wise man.

[@MotoMirius]

The greatest weakness of electricity is that it isn't a visible flow - until it is when it's worse for entirely different reasons!

[@tinks43]

Always a pain, hope you get to the bottom of it soon! Gotta love the Kewtech for the audible continuity check 😀

[@MotoMirius]

Thanks Dave. Yeah, a life saver so far! Skäl. David

Hi David! If you think that you don't have the skills to find a electrical problem imagine I... Sometimes I think that I was born with two left hands to change a single bolt in my motorcycles. Kkkkkkkkkk Another great video man! []'s Jerônimo (from Brazil)

[@MotoMirius]

Ha! 😀. Nice one Jeromino and thank you, much appreciated 👍. Skäl. David

[@sasportswearandsigns2573]

Dave, hope you can help, started bike yesterday, neutral light on side stand down, running for about 10 minutes, cuts out, no neutral light on, no power doing nothing till I put side stand up then started straight away, rest of day couldn't get neutral light on and wouldn't start unless I lifted side stand up. Any ideas what the problem is ?

[@MotoMirius]

I would look at the safety switches, possibly the neutral light too. Typically the bike won't start if the side stand is down unless the bike is in neutral or the clutch is pulled in. If the neutral light is not on, the bike might think it's in gear and cut out - because it thinks you will fall off if the side stand is down.

[@rickydas]

Hi Dave, I have a similar symptom with my bandit too (GSF1250 SA from 2007). Intermittently the starter would not budge - draws a massive amount of current (visible because all the lights etc dim down) when the symptom occurs. Most of the time will still restart in a single press of the starter button after 30 minutes or so of being left alone (that is, if I don't drain the battery trying to start - bike electrics get reset as if battery is disconnected if that happens). Have bought a Yaber jump starter battery pack that I carry on my bike due to this. Jump starting gets it to work in a flash. Would still like to get to the bottom of the issue. The problem states after a rectifier was replaced few years ago when Suzuki did a recall. I even changed battery first and then even put in a new starter (expensive!) but the intermittent problem persists. Garage could not find the problem either. Love to know how you solved yours.

[@MotoMirius]

Mine was a poor earth - the most common of electrical faults, along with dirty contacts in the starter button. Not sure how much they changed the harness but a big weakness with the 1200 harness is that it doesn't have good earth points. Rectifier is part of the charging circuit so that could be an issue - low charge will make it hard to start. I suggest testing the battery for charge, holding charge and for charging. Poor earth could also cause your issue and I'm considering adding another earth point to the frame. Good luck - as you've found electrical issues are elusive and are probably the biggest issue with any bike.

[@rickydas]

@@MotoMirius the battery charges OK- tested multiple times. Also, after starter non performance (feels like battery is too weak, yet draining many amps during starting attempt) and leaving it be for, say half hour, many times it might start on a single press if the starter button which can't be the case if the battery was indeed too weak. No?

[@MotoMirius]

@@rickydas Single press on the starter takes very little out of the battery, the question is what happens when the bike doesn't start first press and you push the battery capabilities. A better test might be to kill the engine and try immediately restarting a few times in that scenario - if the battery holds out, you can move on with your fault finding. If the issue was the starter then you'd have the same issue with your jump pack, and the fact that the jump pack can start the bike straight away when the battery has failed to do so points at the battery. Most likely the initial failure leaves the engine with unburnt fuel and the weak battery can't turn the engine over fast enough - but you say you replaced the battery - which points to an issue with charging or draining which won't be an issue with the jump pack.

[@nathanscott2516]

The issue I had with my starter switch not working was the clutch lever wasn’t getting pulled in far enough. But I’m also having an issue with my bike not starting and I’m not sure if it’s come down to the throttle position sensor but on my dash it says F1. and when I checked the fault codes, it came back C28 and C29. Also, when I turn my signal lights on, I get an alarm sound and I’m not sure if that’s stopping .Also, when I turn my signal lights on, I get an alarm sound.

[@MotoMirius]

If the clutch switch is not working correctly then the bike will not start. This is a common issue and I would ensure that it is fully ruled out before going down the rabbit hole of error codes. But your current issue appears to be related to the alarm - and again, if there is an issue with the alarm then it will prevent the bike from starting -which is what it is designed to do.

[@mantasapanavicius4679]

Same issue with my gsf bandit. I was lucky because bike end his life when 10 m left to reach garage. Will try to check all wires on this weekend. Will let You know what I will find.

[@MotoMirius]

Good luck with that. One wire at a time! Skäl David

[@fastbandit1250]

I had a problem like this, one of the horns was live and kept blowing fuses

[@seamusrice1865]

I enjoy watching 👀your channel, you have the patience of an oyster, I wonder if you could help me track down a Suzuki Bandit 400 gsr wiring diagram in between your own projects, keep them coming 😉😀

[@MotoMirius]

Thanks, mmmm, not surprised you are having trouble. I'd imagine that Suzuki would have used a similar harness for the similar models of the same age. Depends what you are looking for - wiring colours would be difficult but the online spares catalogues show pictures of the layout of the wiring harnesses.

[@janwoodworth5072]

Hiya dave mike/jan here got bandit sorted now brilliant now bro. right do you no the indicators you put on the dragstar 650. can you put ones like that on the front of a bandit. because just dont like those little bullet ones. would rather have them like on the dragstar do you think they would look abit silly on a bandit. did you sort ya bandit out the electrics ;-) keep up the great work cheers mike.

[@MotoMirius]

Fantastic news Mike well done 👍. Yes absolutely you can. I’ve been running them on the Sportster for years now. I’d run them on the Bandit too but they are a bit posh for that. 😂😂😂. Skäl. David

[@janwoodworth5072]

@@MotoMirius Hiya dave yeah thats what i thought mate ;-( i was going to put the ones from the back which are smaller but cant get them off. so mite have to get smaller ones for the front. put the long stem ones on ebay get some money back off them cheers mike ;-)

[@mychaelsilva6363]

Help my brother, it is fron brazil, estou com uma dessas que não esta dando partida a frio

[@MotoMirius]

Lots of possible options - most common is the battery getting old

[@gerardmcconnon9155]

Having the same trouble with a bandit 1200 Oil light comes on every time with ignition But the rest either takes a few seconds or blows the ignition fuse

[@MotoMirius]

Electrical can be the worst. But, it's just one wire at a time and you'll get there.

[@gerardmcconnon9155]

@@MotoMirius Think I've found the problem Bike had carb heaters on it It doesn't now but the thermo switch is still there And someone plugged it into the power feed Meaning when it's cold it completes the circuit and shorts out the fuse

[@MotoMirius]

@@gerardmcconnon9155 Great catch and well done - who would have guessed?

[@taxitwat1]

I've got a mk2 600 but when it gets hot it dies could it be the coils

[@MotoMirius]

Coils can die when hot so it could be

[@m.hatschky4174]

Hi David I think you still have a problem with your main ground from the batterie to the frame.

[@MotoMirius]

Hi Martin. I think you are right. I think it’s the earth too. I think I might have realised where I was going wrong. Let’s see if you are right! Skäl. David

[@mark-e8h3v]

is that delboys old bandit

[@MotoMirius]

It is indeed.

[@mark-e8h3v]

@@MotoMirius suffering same issue with a gsx600f katana and when it does start it has eratic idle then rev guage goes nuts as if electrics are cutting in and out

[@MotoMirius]

@@mark-e8h3v earth connections are always something to check - make sure that the the points that connect to the frame are clean and secure.

[@Tec2Nut]

I am have an issue with my right indicator 2009 1250

[@MotoMirius]

Almost certainly bulb or wiring. Should be easy enough to trace through the wiring to find where the power stops or there is an earth failure. Good luck!

[@Mark-wx8ku]

What was the fix?

[@MotoMirius]

It's in the second video. As usual with wiring, it's matter of tracing each wire in turn

[@muzahimalkhazraji5219]

❣️❣️عاشت ايدك

[@MotoMirius]

شكرا لكلماتك الرقيقة!

[@garryhills8648]

It looks cold in the garage David!!! I hope you get it sorted asp www.vehicleproducts.co.uk They do a non insulated Japanese terminal kit For £28.90 with the tool as well Get them to send you the Catalogue Keep going David your doing a good job Garry

[@MotoMirius]

Nice one Garry. I buy from them but never noticed that kit before. Might give that a go. Much appreciated. Skäl. David

[@jaimielibbi1]

Have a.chat with Del Boy or Mackie, they will sort it.

[@MotoMirius]

Without a doubt they would easily. But then I not learn anything. Maybe a last resort eh? Thanks for the suggestion, much appreciated. Skäl. David.