Getting very frustrated with Vintage Air
I've been troubleshooting a vintage air issue over the past month, and it's getting very frustrating. Long story short, the system will function/power up regardless of the 12v ignition (switched) source being on or even plugged in. I've been working with their tech and we ran a bunch of tests via a voltmeter and determined that the AC control panel (in the dash) was getting the 5v to operate regardless of whether or not the purple wire (12v ignition source) was powered or not. This is a brand new system mind you. So I sent them the ECU, control panel, and control harness, at my own cost to have them test it. They ran a 24-hour test on them and said they were working as expected, and thought the issue must be with the main harness.
So they sent me my components back, along with a new harness (at no cost). I was hesitant, as unless their original harness had a jumped connection somewhere I couldn't see how it would be the wiring.
I installed the new harness, following the wiring diagram to the T, and still, the same problem exists. I can literally pull the purple 12v ignition wire from the fuse block, confirm that it is getting 0 power, and the system still operates.
The other weird issue, the tan wire, which is for 12v backlight, comes on all the time, EVEN IF THE WIRE IS SIMPLY GROUNDED. That's right, if I take what is supposed to be the 12v backlight source for the control panel backlighting and GROUND IT, the backlights come on.
I have zero ideas about what is going on, and can only surmise that the tests they ran on the ECU confirmed the system operates, but that was never in question. The problem is that it operates even when it's not supposed to, and perhaps their bench tests don't cover that.
Anyone else ran into that issue?