led triggered by dome light and on/off/on

In your drawing the LED would always come on with the dome light - there is no "off" position.Kevin Pierson

KPierson wrote: In your drawing the LED would always come on with the dome light - there is no "off" position.

So I should leave the middle pins of the switch not connected instead of acc+?

Like this?

I was thinking something like below with your switch illumination connected however you like.

That would work if you could get between the dome light and dome light switch, but you cannot. Since the dome light trigger is (-), i will be using this:

If you supply 12vdc directly to the LEDs and run a ground through the switch you can eliminate the relay (like oldspark showed).Kevin Pierson

KPierson wrote: If you supply 12vdc directly to the LEDs and run a ground through the switch you can eliminate the relay (like oldspark showed).

Except there isn't enough space between dome light switch and dome light to add a circuit. Even if there was, I would have to dig through the ceiling and feed wire. Simpler to tap the dome light trigger from the BCM at the driver's feet and use a relay in my opinion. I do appreciate the help though.

jewster wrote: That would work if you could get between the dome light and dome light switch, but you cannot

I assumed you could since you specified "Switch Position 1(ON): LEDs to come on with dome lights" (without using current or voltage sensing techniques). (Else how would you have done it? Or should I review that relay version?) So Position #1 becomes "on with dome (door etc) triggers" instead of "on with dome light". Just move the LED/3-way section down so Pos #1 joins BELOW the dome selector switch (above any door <whatever> trigger). IE - connect Pos #1 to what you called "Dome light (-)" in your diagram.    It is still the same solution - no relay is needed. (Unless your LEDs/load draws several Amps.)

KPierson wrote: You would still use the (-) dome light wire at the BCM, you just wouldn't need a relay:

ha! Wow that was easy. Dang. Why is the fuse on the other side of the battery though?