3 amp - I happened to forget that last week on a ride in Death Valley. I had previously wired up a Powerlet plug on the left panel with big wire and a 10 amp fuse. We stopped to ride a gravel trail and double track road, aired the tires down to 25 lbs and had a great ride (need to do a ride report). After we came out of the canyon on far side we stopped to air up the tires. We all pulled out our little compressors and being slightly lazy thought, no need to pull out the adapter to run this through the Powerlet plug, I will just plug into the stock accessory plug. Switch on, count to 1, fuse blown. ??? Useless for anything other than GPS or radar. At that point I was really happy I had wired in the separate plug because for an off road capable bike there is no place to plug in a compressor. I would have been forced to remove the side panel and alligator clip to the battery. So for those who what to plug in compressors, plan ahead and add another plug or rewire the existing and put in a bigger fuse.
Little side note: this was the first off road riding with the Tenere and it performed 3000 times better than expected. I have a lot of off-road riding and trials competition but not big bike expereince like this, but this thing flat worked. Gravel roads, rocky trails, light sand; did it all with confidence. great bike. ::022::