i want them in the engine bay and i want them to come on when the car comes on but i dont want to have a switch can anyone give me detailed instructions on how to do this?
thanks
Eric

 

hook a wire up to a source that's always powered and a source that's powered only at key on hook it to a relay with appropriate fuse then wire your lights to the relay output


Just noticed the two sources are reversed

 

thanks.....totally just got pulled over because apparently having lights on the exterior of your car is illegal in all 50 states....talked my way out of a ticket....looks like i need a switch

 

Lol. Yea pretty much any additional light to your vehicle is for "off-road" use only, with the exception of like side amber markers.

 

I actually got a video of his car when I saw it on the highway. Here it is:

 

True fact: A string of christmas lights used instead of speaker wire will light up in response to the music signal.

Not that you should do this - just that you could.