Welcome dude.
P180 UG4 is a full DC, so no changes in wiring as it can handle an HID without any batt issues. If u have any plans to go for a higher watt halogen only other mods required.
There are mainly two types of HID installations like in anyother bulbs, First is HID conversion Kit, it can be directly fitted to the stock reflectors and if u've more weight on ur wallet go for the second type , projectors which will offer a good beam spreads on low beams with min glare to on coming traffics. Normal conversion kits are more cheaper than HID projectors as it starts from 1.5K onwards ofcourse a cheap chinese one, so go for anything falls between 2.5-5K will give u more life span of the lighting system. Light intensity will be more for this as there's no glare cut off sheild in reflectors so u can enjoy the rides at the cost of others happiness
This is a HID Conversion Kit for bikes
And this is the HID bulb illustrates how it performs the dual beam function with a single bulb by the help of a solenoid. Behind the HID , normal halogen bulb
This is how an HID wiring
More info for pros and cons of HIDs on reflectors?
Good Sealed Beam for HID
Projectors are really amazing in their perfo especially low beams, but it cost like hell. Range starts from 6K onwards from the accessory shops. If u r lucky, u can get a car projector from junk yards and put a suitable conversion kit for that, but it requires lot of time and skill to get it finished. U can refer Shree's projector mods for Uni on this .
INSTALLED PROJECTORs on MY UNICORN
Hope this will clarify everything, if not, come back we all are here to help u