Ok, i took some measurements this morning. Here are the results: Verified switch feed wire voltage: 11.5v Verified switch functionality: 11.5v on outbound side Error at driver side light: 0.15v Error at passenger side light: 0.15v 3rd light lit as appropriate
Driver side leg is direct from the switch. Passenger side leg is tapped off of driver side.
It would appear that there is a problem with the wire that runs from the switch to the driver side light or possibly with the tap to the passenger side. I'll look at the easier one to investigate first, the tap. If that looks OK, I'll inspect the length of the wire and either fix or replace as appropriate.
