Im going to install neons under the driver and passanger footwells and also under the seats for the rear passangers.

I want to install them to so they light up when I open the doors. That is not going to be a problem because I will tap it into the dome light.

Here is the real question.. I want to be able to put a switch inside so I can turn on the lights while im driving....

 

How is the easiest way to tap into the dome lighting? I was thinking about doing the same thing.

 

I would use a SPDT relay.

I would connect

terminal 86 to ground
terminal 85 to domelight wire positive source
terminal 30 to constant power source
terminal 87 to the to the neon positive wire
terminal 87a to a switch then also to the positive of the neon.


If you do it correctly, the relay should behave like:

when you open the door, the dome wire will energize the coil, terminal 85 and 86 and connect constant power from terminal 30 to the neon through terminal 87. At this point, when you open the door, doesn't matter if you have the switch on or off, the power won't route through 87a but to 87 instead

When you close the door, there is no power to terminal 85 so the relay won't energize the coil, power from terminal 30 will then be connected to terminal 87a. At this point if you have the switch on will turn on the neon or off to not turn on the neon.

 

I'm really not good with this kind of stuff...any diagrams ?

 

u wanna do that 2 i smell another project let me know it goes.......

 

sorry to brign back an old thread...but i have a question...if i sue this method to mount a switch...doesnt the ground countrol wether the light is on and off....and the pos is always constant even to the dome?....or is that mehtod correct? shoiuld i follow exactly what he said to do?

 

Did anyone sucessfully try this?

 

need diode

 

if i had more time i would do it for u.. even w/ me getting outta school for break its farging cold outside and im working like madd... i live 2 towns over from u