California Flash
Even though everything possible gets bench tested, on the last few builds I have been plugging in an old ignition and turn signal switch to verify everything dash related works....turn signal, 4-ways and high beam indicators, e-brake light radio, fan switch, dash lights as well as all other electrical before the column assembly goes in. With a factory A/C car , there is virtually no room under the dash. I will fire the engine to verify no heater core leak and likely charge the A/C BEFORE the windshield goes in....just in case. It is a MFer to remove the HVAC with the dash in.