Reversed polarity battery put in backwards!

[shane7818]

Connected the battery reverse polarity as it had two sets of terminals and was not paying attention as I’ve done it thousands of times before! Horn sounds as warning instantly, connected right way all good started ran idles, needle sweep and check but then the voltage regulator/rectifier under seat started to smoke.

Disconnected battery, problem is whenever I connect the battery it starts to heat up until it smokes (burning wire insulation) the batter is good, been tested, even tried with old battery, both have correct polarity. Can anyone give any advice? Is the rectifier diode done and the voltage regulator/rectifier now creating a permanent short?

It’s a 2013 lc GS so canbus wiring, no fuses I’m aware of just electric compensators.

TIA


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[roamer]

The regulator rectifier has probably been damaged,
Try disconnecting it then re connect the battery and if no heat smoke run the engine,
The rectifier regulator contains large diodes amongst other things and unlike a car system clips the voltage output and sends the excess to earth,
Ideally do some wiring tests etc but at the point it runs ok with it disconnected you have found the load causing heat,
Replacing the rectifier regulator wont do any harm , if the stator is damaged the rectifier wont give a good charge but there will be no heat,

 

[shane7818]

The regulator rectifier has probably been damaged,
Try disconnecting it then re connect the battery and if no heat smoke run the engine,
The rectifier regulator contains large diodes amongst other things and unlike a car system clips the voltage output and sends the excess to earth,
Ideally do some wiring tests etc but at the point it runs ok with it disconnected you have found the load causing heat,
Replacing the rectifier regulator wont do any harm , if the stator is damaged the rectifier wont give a good charge but there will be no heat,

Thanks roamer,

Without testing stator or alternator yet though with on board voltmeter running, the heat is generating with the kill switch off bike off etc. It’s producing heat just by connecting the battery. I was under the impression it reduced the voltage to the battery to charge it, wasn’t aware the current went both ways so was confused that it’s heating just by connecting the battery. I assume if I have destroyed a diode that the rectifier is now creating a short and hence heat even when the bike is off and I introduce power? Hopefully that makes sense so I assume when I change it I complete the circuit again and there then will not be a short and thus heat problem


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[ferguscawley]

You've blown the reg / rect by connecting it incorrectly. Diodes are no longer working (they operate like a one-way valve) and your battery is feeding directly into the device itself.

Disconnect and replace it immediately.

 

[shane7818]

You've blown the reg / rect by connecting it incorrectly. Diodes are no longer working (they operate like a one-way valve) and your battery is feeding directly into the device itself.

Disconnect and replace it immediately.

Exactly what happened. Causing permanent short, replaced plug and play new unit. All ok and charging at 14.2v so all charging system good. Thanks for your help


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