It is straightforward. We got a 240SX brought over here and put the silvia front on. The lighting wiring is the same. I take it that your silvia lighting came without the bulb fixtures and male/female plugs? Are your lights S13 (round halogen projectors) or PS13 (2 rectangular lights each side)? Regardless, the low beams are on the outer side of each, and the high beams are on the innser set of each.
If you need more help, let me know at
kenjiworks@hotmail.com
Kenji
Ayase-shi, Japan