Looking for motorcycle electrics gadget

What is needed: Drain current for heated grips/other gadgets straight from
the battery (not from some light/whatever connection) and have it
connected/disconnected with the main key. I have an schema of required
relays and fuses, but can't be arsed to print a circuit board, solder
components, etc.

Does someone in the UK/world.getFleabay(); sell such thing? If yes, who and
where?

Ta.

 

These are quite good for turning accessories on/off. The are specifically
developed to use the indicator cancel button on a BMW but could be adapted
for any switch than can give a negative pulse to the control line. I
imagine the standard 3 way switch used on most Japanese bikes can do this
(the ones where you push the button to cancel either indicator).
http://www.nippynormans.com/products.asp?dept=223

 

RS Components maybe?

http://uk.rs-online.com/web/

This is the section for automotive relays.

http://uk.rs-online.com/web/search/...ount=31&Ne=4294957561&N=4294963949+4294954445

Lots to choose from there, more than can be quickly digested or
summarised, the spec specs detail form factors, weatherproofing, pinout
and behaviour, will it survive an anvil falling on it? I would
probably get a couple of any type chosen to have a spare handy as
a plugin replacement or future diagnostic aid and a protection against
future non-availability of the identical item.

Running stuff off existing wires isn't too terrible. Many bikes you will
find have the same gauge wire for example supplying the sidelight/pilot
lamp as are also supplying the dip/main beam, so that seems ok for stuff
like heated grips and the rats nest of wires can be tucked away in or
behind the headlamp body. If using a relay to switch the main current
feeds on, those same places are a good pick up for the negligible current
for the coil side of the relay as well. Whilst it should seem preferable
that all the accessories lose power when say the ignition or sidelights
are turned off, there will probably be instances where that behaviour will
exasperate you or immobilise or immolate the bike but better that than the
horror and humiliation of a flat battery.

Last thought on relays is that the mind turns immediately to thoughts
of great clunking clicking monsters but solid state equivalents (a
few are available with ~12v dc control voltages on the RS site too) might
be more reliable and weather resistant, there might though be
disadvantages, heat dissipation and off-state leakage are possibilities.

 

From the answers here and in Dagonewsgroup:

Use a horn relay with its mounting lug, drive its coil from the pilot lamp,
and then connect gadgets to this [1] nice waterproof fuse box, plus all the
waterproofing and connecting details.

[1] http://bluesea.com/category/5/21/productspecs/5025