Bad ground to A/C unit Options

[conus00]

Couple days ago my lighting of my A/C unit started flickering and then died altogether... First of all I thought that the bulbs died (most unlikely considering there are three of them and that happening at the same time is almost impossible) so I pulled the unit out today just to find out that they are all ok. I took a tester (the one with crocodile clip, not a voltmeter) and found out that the leads on the A/C board are getting power just fine. I am assuming that because of the crocodile clip is fastened directly to the chasis the fault is in the ground of the A/C unit. When I tried both leads on the board of the A/C i get zip...
How should I go about finding the faulty ground? Does anybody know which wire is ground on the A/C orange plug?

Thanks!

Quick update: something else is going on with my A/C unit. It used to blow scorching hot air now it is barely lukewarm. Also forgot to say that the LEDs inside of the buttons light up just fine... Very odd...
Please help!!!

This post has been edited by conus00: Feb 17, 2012 - 12:20 AM

[conus00]

Nobody knows?

[conus00]

All the members here with extensive electrical knowledge and nobody knows the answer to my problem?
At least I would like to know if the A/C panel has two separate fuses?
How come that the LEDs inside of the buttons light up but the panel itself does not?
Beats me.....

This post has been edited by conus00: Feb 19, 2012 - 11:57 PM

[richee3]

Mine does that too. On occasion, the whole panel will light up then go back out.