Source to connect moon visor lights

[inthechateau]

Getting ready to install Moon visor in 96 Tahoe and I'm trying to find a good point to connect the visors running lights to under the dash. Any pointers?

 

[_Dylan_]

The running lights at the headlight switch

 

[the big blue bus]

where i did my cab lights ^

 

[SunlitComet]

there was typically a white wire tapped into the brown output wires of headlamp swith that ran up the left windshield pillar. if not there(unlikely) follow the same route. in the dually trucks the were grounded to the "Illuminated vanity mirror jumper harness, approx.8 cm (3 in) toward LH illuminated vanity mirror."