"Low Fuel" light on panel

[M20Kid]

I have an '81 M20K and I just installed this new fuel gauge https://www.aerospacelogic.com/engine-instruments/fuel-level/resistive-float/two-tank-fuel-level/

After installation, my "Low Fuel" lights are illuminated on the annunciator panel all the time regardless of the fuel level.  My installer isn't sure why, but obviously the circuit is not getting what it needs.  Does anyone know how the "Low Fuel" light is wired?  And to what?

I also need to send the fuel senders to Air Parts of Lock Haven to get them overhauled.  They're not quite right and this new gauge wants pretty good information.  Has anyone had that done before?  I'm just checking to make sure it's work the time and money.

[ArtVandelay]

The low fuel should be connected to the sender side of the fuel gauge.

Yes, they do a great job, usually it’s the inboard senders that needs it as they are always submerged in fuel.

[PT20J]

Here’s a description of the IAI annunciator low fuel circuit from the M20J service manual. Should be the same for a K.

[Pinecone]

I am trying to figure out how to repurpose them (86 M20K) to be Pitot Heat and Prop Heat lights.

Low fuel is now handled by the G3X

 

[M20Kid]

I was out flying for the past several days and didn't see the responses.  Thank you for the assistance!  I'll get this information to my installer and hopefully he can use it to get things working properly again.