I'm the one that origionally did this write up just changed my shared_user name... um ya on a Silvia or 180 the wires are run through the factory harness so you'll have to figure out what wires they are and run wires front the dcc subharness to where it goes on the hood latch support. I just converted my Silvia to DCC also but the wiring was already there for the ambient air sensor. Sorry for the lack of help.