i had the misfortune of having two fag lighter plugs literally melt over the last 11 days. each plug was rated at 6amps and each running a tv and sat box. plug one was a shop bought, integrated double adaptor (fused) and this was running a 15" lcd tv plus a 'porty' sat box....this one wasnt too bad but had started to 'bend' a bit and the spring loaded tip had 'welded' to the casing. plug two was one i cobbled together from a 4 way socket bought in france, running a 21" lcd tv through a regulated 12v supply unit plus a Zhender sat box, this one literally melted inside and the fuse shattered. it also melted the back out of the socket....bugger really as this is part of the aerial amplifier on an RV. it was hot enough to burn my finger on the metal contact when i pulled it out in each case there was less than 5amps present. so, my advise is DONT use cheap plugs as found on Ebay and high street motoring shops.....it just aint worth the risk !!!! i just ordered four Hella/DIN type plugs and sockets rated at 10amps each and will be fused at 3amps each.