I have an electrician do that for all units not yet equipped (e.g. the Jimny, Pajero, Urvan, Jazz, etc.).

Sorry I am not an electrician myself. But you can try to consult them at Jemson's Auto Electrical and Jorge's Radiator Shop | Facebook

Mura lang ang labor niyan if you bring your own switch (Php300 ata or less ang labor if I remember right). And it's a 20 minute job.