I was checking the current draw of my cooling fan on my Tenere as it had blown a fuse recently and I wanted to know why.

The fan drew 3.4A running and on startup - I suspect the fuse may have blown due to a dirty connection which before I cleaned it was probably causing too high current draw. This result tallies with the specs for the standard fan:
http://www.spalautomotive.com/eng/pr...=VA31-A100-46A


Whilst I was mucking about I checked the draw from my accessories - they are supplied by a single feed from the battery through a 10A fuse and distributed accordingly from behind the grey tank/headlight "wings".

Some accessories have an always on 12v supply - spots (triggered by a relay on main beam), GPS tracker, DIN socket, heated jacket supply, etc. The other accessories are supplied via a relay when the ignition is on: charge light, SatNav, Autotune and heated grips.

So these are the measured current draws:

Ign on 0.65A
Just a relay, LED charge light, GPS tracker and supply for Garmin SatNav (which wasn't attached but the supply has a box of electronics attached - I think it just reduces the 12v to 5v).

Engine idling 0.80 (Not sure why it rose, Autotune?).

Heated Grips - setting: 1 = 2.4A
Heated Grips - setting: 2 = 2.9A
Heated Grips - setting: 3 = 3.2A
Heated Grips - setting: 4 = 3.3A
Heated Grips - setting: 5 = 3.5A
Heated Grips - setting: 6 = 3.8A

A bit higher than I expected - all checked with the engine off but ignition on.

Spotlights 1.9A
Spots (eng off) 2.2A

The spots were just the generic type from eBay
http://www.ebay.co.uk/itm/191433012079

I'll have to remember to test my Exo heated jacket.

__________________
Simon

Brighton, UK

Usefull, thanks!

I took a couple of missing readings to add to the list:

The draw with the ignition off - so just the GPS tracker: 4.4mA

And with the engine idling (there's 14v at the battery)

Garmin Zumo 350 0.5A

Exo heated jacket 2.7A

__________________
Simon

Brighton, UK