Hello all,

I have a battery isolator switch to fit to my K75 basic, I think its rated at 300 amps, you turn a knob and a cam/spring allows the terminal connecting plate to lift away from the two terminals.

Its not too big, should be able to fit it somewhere around the right hand side of the battery area.

My question, I seem to recall reading somewhere, it was specific to K bikes, to isolate the negative battery terminal, would this be correct?,

Thanks in advance,

John

It's not specific to Ks, you should always isolate the ground not the positive.

And it will also cut power to the clock in the instrument cluster.

duck wrote:And it will also cut power to the clock in the instrument cluster.

You are right duck.

I have a similar switch on my bikes (only rated for 30 amps and installed on the ground) and the clock is the most annoying problem.


If this annoys you too much, you could always run a separate wire in the instrument cluster and permanently ground your clock directly to the negative of the battery.
Warning:
If you go this route, you must cut the original common ground wire/trace going the clock otherwise if you start the bike with the additional ground switch turned off, all the powered equipment will get the ground from the instrument cluster/clock and you may see the speedo and indicating 800km/h. You will have to call the


The ability to switch the ground off has a big advantage that if you ever have a welded starter relay you will be able to turn the power off.

Thank you for the replies,

I did think about the clock, very good advice on the separate earthing for the clock!!, for now I will just re adjust each time and see how that goes once I have the K75 back on the road, am nearly there!....

The switch is rated at 300 amps, which does seem a bit extreme, but hopefully will be well up to the job, the possibility of a welded starter relay is the main factor for fitting the battery isolation switch.

Its the smallest switch I could find, here is an ebay link, in case anyone is interested,

http://www.ebay.co.uk/itm/300A-Battery-Isolator-Disconnect-Power-Cut-Off-Kill-Switch-Boat-Car-Van-Truck-/311478926947?hash=item4885973e63:g:BkAAAOSwT5tWOlOz

Fits in nicely on the right hand side, just in front of the radiator expansion tank, will post a photo when its installed.

John