According to roadking I need one of these roadking.co.uk/hella-plug-ad … ocket.html
Sent from my GT-I9100P using Tapatalk
Or theres one by roadtek on ebay for 19quid that appears better altho im a little concerned with it only being 8amps.
Sent from my GT-I9100P using Tapatalk
Got one of these from Go Outdoors
m.gooutdoors.co.uk/adapt-it-5-p156133
Sent from my SM-G930F using Tapatalk
One of these is handy to have to test socket voltage, they don’t like constant 28v though 
ebay.co.uk/itm/New-12V-24V-D … SwT5tWMyOS