Need help with automotive circuit

[ormingtrude]

I’ve been trying to get some heated seats on my jeep rigged up to a 3 position switch with two different LEDs to show me warm or hot. The LED’s light up but the seats don’t get warm. They seemed to work ok before I had the LED’s on.

One cause might be that when I first did this I had the seats connected to the NC side of the relays not the NO side as shown. So it could be that the double power to the seats blown their circuit??

Can you see what’s wrong here, am I shorting out with the LED or something else?

[pebe]

Hi, and welcome.

In your drawing the +ve terminal of the battery goes to the unconnected NC contact of the RH relay that is normally closed, so there is no power going to anything.

Connect the common contact of the rocker switch to Battery+ instead of Battery- and it will work OK.

[ormingtrude]

Thanks and sorry for any confusion:

The red box is the +ve from ignition switch source, so all of my red lines are powered when ignition is on.
All of my black lines are permanent grounded -ve

NC is normally connected right?
NO is normally open right?

Green lines switch position 1 and low feed to seat
Brown line switch position 2 and high feed to seat

Thanks

[pebe]

The red box is the +ve from ignition switch source, so all of my red lines are powered when ignition is on..........
..........NC is normally connected right?
NO is normally open right?

It was confusing because you did not show the battery terminals and you showed a sign on the red box.
So what is the red box exactly? If it is an ignition coil then the Hot part of the heater will not work because its current is switched through the coil (but LEDs and warm heater will work).
If it is the ignition switch, the why did you wire it up that way?

Yes, NO and NC are as you describe.

[ormingtrude]

Again sorry for confusion I don't know all symbols. The red box is a theoretical positive feed from fuse box, only live when ignition is on.

[pebe]

In that case it should work OK as you have wired it. I would suggest you re-check your wiring to make sure you haven't made a mistake.

[ormingtrude]

thanks, I will try that.

[pebe]

If the wiring and connections all appear OK, then we can go through a fault-finding procedure.