Hi Gerontious, I agree....but be aware that certain bikes (ask me how I know this ) have an accessory socket that is only fused to 3A or so, this is only good for charging low-draw gear such as phones or GPS. If you try & plug a portable compressor in, it will just blow the fuse....if you just put a bigger fuse in, you can then melt the wiring.....best way forward is to install a secondary fuse box fed directly from the battery (or you can use a relay so it's only energised when ignition is on) via 30A fuse then with the appropriate gauge wiring/fusing to each accessory. Power sockets, waterproof USB sockets etc. freely available on Ebay. Yep this spot on, I have an accessory socket on my bars, which is great for sat nav or phone, but when I tried my compressor in it, the fuse blew. I installed another under my seat wired direct to the battery using an optimiser type plug, so I use this one if I need to use the compressor.