My main hope was to not have to do heaps of wiring.@Skydome not sure why you'd want to replace highbeam bulbs with a light bar. But...I'd trigger the lightbars own separate relay from the highbeam switch. I think legally you need them on the same switch as highbeam, i.e they both need to come on and off together.
Best keep the lightbar on its own loom.
I'd like the on/off operation of the bar to be linked with the light switch on the steering wheel rather than having to figure out how to safely get a separate switch into the car.
But is it easy to put it into the high beam? Or is it pretty much plug'n'plany?
https://www.ebay.com.au/p/STEDI-H4-Piggy-Back-Adapter/5026940015?iid=122799354152 would something like this make the process easier?