DIY: Fog Light Hard Wire in less than 10 Minutes! W/Headlight integration!

Lannyl81

And just because I would not let this go and have too much time on my hands......

I went looking for a 370Z combination switch (headlight/wiper) that had the rear fog light switch; found several of them...all in Spain....all with too high a $$$ cost for me.

So I stated looking for a combo switch from another Nissan vehicle...cause surely Nissan would use the same combo switch across all of their models....right??....

Well....wrong!

I looked at all the FSM at nicoclub for all the models, comparing combo switch designs, to find that the 370Z is unique. The BCM's combo switch logic is opposite to all other models in that in the 370Z the output signals are normally at a logic high, with a pulse to logic low....all others are normally logic low with a pulse to logic high. So the diodes within the Z's combo switch are reversed to those of all other models.

Bottom line....combo switches from other models will not work, only the 25560-1EA0C combo switch.