Thinking about swapping to Brembo calipers. Positives versus negatives. What’s involved?

Checking voltages at ECM. Looking for wire or wires in harness for supply to high pressure sensor under hood a right Headlight. Color and volts with switch on, full charge,.
my diagram shows b/w…

2005 Z with HID lights, leave them alone or swap to LED or halogen?

What is the process or is there a plug adapter out there to convert them?

OK, A/C compressor won’t engage. Pressure is fine, was working great until radio install. Not sure how that could have affected it, AC fuse under hood in power dist. module good, all switches light…