An update
 

It's that time of year again and the lights are still doing very well. I've 'loctited' some of the fixings as they vibrate loose (tiny screw on back of main body for those who have purchased them) but that's it.

My mix of riding for my daily commute mean that these get used about 25% of the time and you really cannot use them as running lights as you'd blind other road users (I leave that to the cyclists!). For increased road presence I decided to try out some cheap Chinese LED running lights, at 99p for 2 plus some small L brackets for around 25p each it felt like a reasonable risk. The end result, as you can see is pretty good for the money.

Parts:
L brackets- http://www.ebay.co.uk/itm/3108956125...552%26_rdc%3D1
Lights- http://www.ebay.co.uk/itm/2X-3W-Eagl...item35def55b56

You'll need to modify the L brackets, opening the holes so the light fits and it can then be attached to your bike wherever you choose. Wiring, I simply fed it up to the cockpit and wired it into my sidelights. Cheated here, simply hooked the end of the cables around the sidelight bulb contacts (they are poled so if it fails first time swap them over). Given my sidelights are already LED I think the power consumption is nothing to worry about, but I'll let the others on here who know better give an proper view on this.

One point of learning, if you're going to put these on the adventure spec brackets like I have then put them above not below. Although I'd prefer below, they'll fouls the forks on full lock.

Lights are distinctive but not dazzling, not sure if I'd go brighter though.

I have the same aux lights - I used a fly lead off the main beam terminal of the bulb connector to act as a trigger for a relay so the aux lamps come on with main beam.

I really don't like other road users with stupidly bright lights so don't see why I should do so - which is why they're operated via the main beam switch.

Incidentally, I use these people for my relays, connectors, terminals etc:

http://www.vehicle-wiring-products.eu/

Great minds and all that, exactly the same set up. Only I bought my relay fro eBay. Some of the newer cree spot lights look tempting, but no indication of physical size so don't know if they'd fit in the space under the standard light.

Ditto
 

I've just fitted a pair of these Cree spotlights. I intended to use a 4 pin relay as I'd read about. I spoke to an auto electrician yesterday that happened to be working on the same site as me and he said there was absolutely no need for a relay. (My electric knowledge is pretty basic). I calculated a 1.4 amp draw from the 2x10w.
Anyway, I wired them direct from the side lights with an in-line fuse & switch and earthed back to the battery. (I took the tank off to route it).

Thanks Penfold for the recommendation of thread locking the small screw, I'll do that. The lights do seem of high quality but one thing I noticed was the threaded hole was not deep enough to fully accept the screw. I contacted the eBay seller and he said he'd swap them out. In the end I just packed it out with a tiny washer.

I also used the adventure spec bracket (which at �30 was at top limit of resorting to making my own). Looking forward to trying them out obviously adjusted to not blind on-coming drivers.
Will post pic later.
Btw- if there are any sparkies on the forum whose opinion is different regarding the relay, I'd be interested. Cheers