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#1 |
![]() Join Date: Jun 2024
Posts: 2
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Parasitic battery drain Yamaha Neos 4s
Hello, I have this Yamaha Neos 4s 2009 year ( 4 stroke ) and I am experiencing strange parasitic battery drain. I thought that maybe my battery playing after winter, so I bought brand new one and problem still here.
I tested parasitic drain and it shows 0.058 amps and after disconnecting all the plugs one by one I found that when dashboard and regulator rectifier are both disconnected parasitic drain disappears, but IF ONE of those two ( doesn't matter which one is connected ) are disconnected my multimeter shows drain. How to fully trace this problems? What next to test? Thanks in advance. |
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#2 |
![]() Join Date: Jun 2024
Posts: 2
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update:
I tested rectifier removed and it's all good, where OL it's OL where readings it's stable 0.486V. Tested charging system - idle - 14.4 when accelarating it's about 14.3. So I am assuming charging system works properly. I re-assembled everything again, and now when rectifiers connected I am getting 0.001 drain reading, and when I plug in dash it goas up to previous readings - 0.054 something like that. I disasembled dash and everything what's inside looks clean as brand new and no burn marks or oxidation, so I am assuming it's alright with the dashboard except that parasitic drain I am having probably from it. :/ It's like 15 wires and 3-4 accesories and I can't trace a problem. Any ideas? Suggestions? |
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#3 |
![]() Join Date: May 2017
Location: Norfolk, VA
Posts: 591
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I hate electrical gremlins so bad! I always concede. I know this isn't the answer you're looking for but this is what I do. I strip as much plastic off as possible and take it to an electrical specialist. I Virginia Beach, VA I use Tidewater Auto Electric. Yes, they work on motorcycles (they fixed my CBR900RR when I had a crazy random short zapping all my lights, and scooters like my Helix when the dash just went blank but it ran totally normal and a few other random 2 wheel electrical issues. They charge by the hour and the diagnostic fee will apply toward the repair if you so choose.
Some better motorcycle shops also have an electrical guru on hand that can figure something out pretty quick. You'd think that me messing with these things for around 40 years I'd know electrical but that's one skill I've never mastered. You've gotten MUCH FURTHER than my useless butt could ever do with trying to trouble shoot electrical gremlins! |
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