Very hard to tell with police bikes as previous owners could have butchered wiring. My suggestion is to first test all fused with a multi meter to make sure non are bad. If they are all good remove running lights and at running light connector check for power to connector, there should be two wires one for power and one for ground and see if you have power to positive wire. If you don not have power. In my opinion the easy fix is to tap into the headlight low low beam wiring in headlight bucket check wires to connector to determine low beam power with a meter. Spice in the two power wires for running lights. By doing this your running lights will work with headlight on low beam and turn off when you switch to high beam. To me this is the most intrusive way to get power to the running lights, or you can pull a separate power wire, just make sure it is a keyed wire meaning with the ignition off there is no power to wire. Also check the ground wire for running lights to make sure you have a good ground. On most earlier bikes the ground wire is terminated to the running light bucket.when the auxiliary light switch is off no lights at all,
when on all lights work, I have never been able to get the old red & blue lights to work at all.