Welcome onboard.
The general rule of thumb is one menber, one problem, one thread, one Forum. More productive, ensures continuity and allows others to see the complete story.
This thread been moved to Audio to join your previous thread.
Suggest you remove the (back)feed you have provided from ignition and take car back so installer can correct the "mess". Sounds like he cut the W/R wire from dimmer switch which goes to a splice from which multiple wires feed dash illumination; two of which are W/G wires for clock and radio. A more professional installation would have used proper pre-wired harnesses for the specific HU you have purchased.
