What a plonker

[divanmostert]

Hi guys,

This morning I had to jump my bike due to the damn autocom sucking it dry. When I attached the leads to the battery it made a funny beeping noise - almost like sounding the horn - then to my horror, I looked at the car battery and realised I have the leads the wrong way round

I swopped them around and the tried again and luckily the bike fired up.

Does anyone know if I would have damage anything by doing this or do the system allow for stupid mistakes like this?

Thanks

 

[Micky]

I would think that if she starts up and runs OK, and all digital readouts are working fine then you've got away with it ... plonker

 

[divanmostert]

Yep, all seems to be working ok.

Thanks Micky!

 

[Mutley]

Why would the Autocom suck it dry?

I have one fitted to my 1150 and it has no drain if the ignition is off

 

[divanmostert]

Don't know - I reported my flat battery issue here a while back and the Autocom seems to be the culprit.

I connected it off the aux socket, so in theory it switch off after a few seconds after the ignition has been turned off. Some guys said the fitted an extra switch in order to make sure the Autocom does not keep drawing current. I should also mention that I have a bluetooth dongle attached, which could also be the culprit.

 

[GunZenBomZ]

Wow that could of been expensive, add a kill switch to your kit & wire it direct to battery?

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[divanmostert]

Yep, will be installing a switch now.

 

[Pip_UK]

When I attached the leads to the battery it made a funny beeping noise - almost like sounding the horn

So the F800 has a polarity plonker alert? BMW think of everything!

Sounds like your bike forgave you anyway, good.

 

[Dave78]

I work in the car industry and we test for reverse voltage, exactly to ensure nothing major happens if you connect the battery around the wrong way.

That said is always a worrying time when you finally connect the power supplier up the wrong way round and switch it on..

 

[Dave Ett]

Plonker!

Autocom CLAIM their unit switches off if the master headset is disconnected, but I know from experience that it does not. Three different bikes have suffered a flat battery after fitting autocom units, so now I always have a switch in the power line. You could simply run it through a relay switched from the headlamp if you didn't want an extra manual switch in the system...

 

[Greggers]

I've got mine switched through the canbus supply - never had a problem!

 

[John Armstrong]

I've got mine switched through the canbus supply - never had a problem!

Did the same through the socket next to the battery on my 650 twin, and never had a problem with a flat battery too

 

[Tengiz99]

I used to work in IT. Have fried more than one motherboard (the power connectors were easy to get the wrong way round), and more than one PC because *someone* didn't check the voltage selector switch (before the auto switching PSU days).
If it's easy to do then it's going to be done.