wire diagram for leds 2 input 1 output

[tylarius1]

hi,
I want to install leds that turn on from door open which is a negative switched signal ive already checked
and to stay on after car is switched on.

so basically if door is open/ ON
if engine on/ ON
if door open and engine on then/ ON
doors closed engine off/ OFF

by engine on i mean as soon as stereo turns on (ACC WIRE)

ive made a diagram if someone with experience could check it and let me know if its all good and if there is anything i should change.
thanks

 

[tylarius1]

DIAGRAM

 

[Simon47]

I'd stick a second diode in the line from the stereo/accessory line - otherwise you'll back feed it when the doors are open. Also, there's a risk of complicating things as you can backfeed the interior light circuit via the relay coil.

I'd consider using a transistor to pull down the earthy end of the relay coil when the ignition is on, and with a diode from the door switches to the earthy end of the coil. A general purpose NPN bipolar transistor will do, resistor from the ignition on supply (possibly put a zener in series as well if you find it's too sensitive), and a reverse biased diode across the coil to deal with switch-off spikes. Then use the contacts to switch a fused supply for the LEDs.



Or ...
Just use two relays - one off the interior light circuit, one off the ignition feed, and parallel the contacts.