I cannot see any of the wires to the ECU without taking out the glovebox again.

The wires on the ballast resistor are as follows:

Passenger side : Dark Green (on left side when looking at firewall)
Driver's side Brown and Black together .


So do you want me to run a continuity test between the light blue wire with yellow tracer ( assuming it is there) to both of the wires to the ballast resistor to see which one is going to the ECU?