+x DurtyDisco - 2 Nov 2021If they are HID lights the ballasts are usually bolted to the rack, the electrical feed wire is then routed down the passenger side windscreen trim into the engine bay to your batter via a relay.Most people (not in the UK) then have to e roof lights either wired to the main beam, or if in the UK they need to be wired into a separate dedicated switch so they don’t come on with the main beam as they are for “off-road” use only….Hope that helps.