I want to turn on neon lights and strobe lights when the hood is open. They basically need switched +12V power. From reading the factory service manual, there are two wires at the switch. First wire is yellow with black stripe coming from the car's body control unit. The second wire is black (ground). The factory service manual states.

When hood pin switch is CLOSED(OFF), the yellow with black stripe wire is 5 volt.

When hood pin switch is OPEN(ON), the yellow with black stripe wire is 0 volt.

Does this mean the hood pin switch is negative triggered?

Now, how do I use a relay to get switch +12V when the hood pin switch is in the OPEN(ON) mode? Please note the voltage is 5V.

 

Nevermind...I talked to my uncle who's an EE. He showed me how to wire it correctly. I bascially need two relays. Change the OEM switch to +12V circuit to use for the coils of both relays. The contact of the first relay will serve the funcion of the +5V hood switch and the contact of the second relay will serve as turning on the +12V strobes/neons. Pretty complex stuff for someone like me.