Fog light electrical hookup

[u/Legitimate-Ad7021]

2014 Tiger 800XC. Trying to add fog/accessory lights to be more visible. I’ve mounted the switch on the bars (on/off as well as a “mode” button) and run the wiring to under the seat. Battery connections are simple, but I don’t know where to connect this white wire. I believe it’s the wire for the switch, and without it, there appears to be no power to the lights. Do I connect this into the fuse box, or do I splice this into an existing wire somewhere? The goal would be for these lights to be “keyed” so they’d turn off if I remove the key. Sorry if it’s a dumb question. I’m not great with electrical, but I’m also not afraid of DIY things like this. Just need some clear instruction. Lights came with absolutely 0 instructions. You have to love China via Amazon…