Custom interior lighting

I want to install interior lights that change from blue to red after 4K revs. Is there any way of doing this?

Interesting idea.

I'm imagining the adjustable shift light circuit from an aftermarket tachometer feeding the coil of an SPDT relay, in turn driving RGB LEDs - with the terminal for blue on the relay's NC and the red on the NO.

Sent from my ONEPLUS A5010 using Micra Sports Club mobile app

MikeHP said:

Interesting idea.

I'm imagining the adjustable shift light circuit from an aftermarket tachometer feeding the coil of an SPDT relay, in turn driving RGB LEDs - with the terminal for blue on the relay's NC and the red on the NO.

Sent from my ONEPLUS A5010 using Micra Sports Club mobile app

Click to expand...

Sorry you got me confused there lol I don't understand spdt relay ?

SPDT stands for 'single pole, double throw'. Read a little on electronics and components - you're going to need it. I have no electronics training or experience so I'm not the one to teach you or anybody else; I've just done plenty of reading (online etc) over the years.

Good luck!

Sent from my ONEPLUS A5010 using Micra Sports Club mobile app

You might be able to make a potential divider with the rev counter wire as the input (not sure how that would effect the actual reading, maybe make a parallel wire to it in case?). If you use a variable resistor you can fine tune the circuit to get to the right revs.
Edit: cant's seem to upload the image or a link to the image, Google image search "potential divider variable" instead

The output could then trigger the switch between blue and red lights, with a transistor or relay