Can't recall the last car I owned that actually had a lighter that went in the socket: likewise an ashtray. Probably one from back in the 90's.
Worth checking the wire spec before direct connecting or upping the fuse as manufacturers aren't guilty of being overly generous with capacity over & above what's stated these days. The wiring that was on the USB socket I took off the other week was very fine & wouldn't handle much in the way of current, hence it's in the bin. Luckily, the accessory terminals & DIN socket are both 10A on the KTM so would handle a pump; pity there's no space anywhere on her to store one...