Ello matey
Had this on mine, went away and was followed days later by the multifunction switch smoking when I used the indicators and eventually catching fire.
Hunt the relay down, if its anywhere it'll be up by the fusebox, under the dash on the drivers side someplace. There is one or two by the washer bottle but I'm sure its under the dash.
If not then pull the multi switch out and CAREFULLY (no, really I mean this!) pull it to bits, most of it is spring loaded so do it in a box. once its apart you'll see the contacts. If its anything like mine, they will be charred and marked. You may be able to clean them up but mine had actually burned the board requireing a new set. I got a set from a scrappy, stripped them, cleaned all the contact faces and used some white lithium grease to reassemble it.
The Zook is unusual as its the negative feed toi the lights thats switched, this means any wiring shorts will cause the accessory on the end to come on rather than blow a fuse. hence people complaining of lights that wont turn off etc.
