I installed the rugged ridge dual battery relay kit in my cherokee. It worked great but now the switch has no lights and is not working.

There are no fuses and I'm not sure where to start with troubleshooting, any advice?

 

My guess would be that the relay failed

 

I tend to agree, that seems to be the only part that could. Any idea on how to test it? I have a multimeter but not sure what the testing procedure would be

 

You should hear it click when its on. Hope that helps some