Had a quad lock on the bike for a couple of years, but after upgrading the phone didn’t want to keep attaching the phone to the handlebars so picked up a 5” CarPlay/Android Auto screen off Ali. Cost was around £35 to the UK.
https://a.aliexpress.com/\_EwNhFlc
Did some research trying to work out the best way of connecting the screen to an ignition relay, but couldn’t find much from others that have done it before so thought I’d post how I got it done:
Used one of the DC 5525 ports under the seat using this adapter - https://amzn.eu/d/0fr9BaTM
Didn’t consider this originally because neither of the ports used to work. Turns out the 15A mini fuse was blown (fuse located underneath black plastic beside seat key release).
Soldered the positive and negative wires to the split ends of the above cable followed by some heat shrink tubing and then ran the cables on the underside of the tank. Included mounts were actually quite good, sturdy and hold the screen in an alright position. Fires up when I flip the ignition and turns off the same.
Will update with some pics when I next get the bike out of the garage