How come we have so many electrical problems with just adding an alarm, heated grips (not to mention GPS,heated clothing etc) when Police bikes have an assortment of gadgets?
Do they have a second battery? do they have a better battery?
most professional installs use relays etc to minimize the loading when items are switched on and i would not be suprised to find a seperate battery fitted whislt most diy installs just wire it in and go
Police Bikes can often have a second battery to allow them to sit for long periods with lights going but engine off, they also have up-rated alternators and as previously mentioned have pro installs 
Their other big edge is that they are not paying for any of this stuff out of their own pockets.
Yup, it’s that old thing of “don’t buy by price, buy by quality”.
Better yet “buy with someone elses money”.
Police bikes are fitted with a heavy duty battery and alternator as part of the spec, and they also have uprated and different electrics.
They don’t carry a second battery as their simply isn’t room.
Flat batteries was always a problem we had with the Norton’s and earlier BMW’s, particularly the R80, espcially if we had been at the scene of a crash for some time. On the R80’s, we always had to use the throttle stop to hold it at a higher rev on tickover whilst dealing with the incident which caused overheating and made the exhaust down pipes turn red hot, literally, red hot.
So the short answer, is heavy duty everything, and this applies to the cars as well.
always the best way surely !!!
cant begrudge them some nice shiny toys 
cool! thanks guys
[quote]
T.C (16/02/2010)
Police bikes are fitted with a heavy duty battery and alternator as part of the spec, and they also have uprated and different electrics.
They don’t carry a second battery as their simply isn’t room.
quote]
Not any more.
Our BMW’s have a standard battery and a second Gel battery to run the auxillary equipment.
This is because the BMW cannot be left to idle for any length of time as it overheats and , on rare occassions, catches fire…so a ‘run-stop’ is a non-runner.