Audiovox CC not working

[Lt.Gene]

Need a little help on diagnosing the illness afflicting my Audiovox cruise control.  I followed directions from the "Shop Talk" segment and installed it on my '99 Interstate about four years ago—been problem free until now.  The control head no longer lights, though I do have power to it and the servo with it keyed on.  Bought a new control head and it will not light either.  Followed the testing section in the Audiovox manual and the LED in the servo lit up a few times during testing, but not any longer.  Checked all the connections—all appear as they did when I first made them.  Any help is appreciated in advance.
Gene

[alph]

i know this might sound too easy, but sometimes that's the most overlooked, check the fuse?

[Lt.Gene]

Second thing I did and checked it again...still good.  thanks

[Attic Rat]

Unplug the crusie at the back of the servo and take a test light then push the bottoms on the switch to see if the servo is getting power and that will also tell you if you switch is working. I have seen several of the servo's go bad I am on my third one but have had a crusis for over 10 years.

[olddog1946]

Sure sounds like a faulty ground to me..if you are probing with a test light and you get some of the indicating lights to come on,,,the probe is supplying a ground for you...

[Mr.BubblesVRCCDS0008]

Shot in the dark. Check your brake light bulb to be sure it is working. Unit gets it ground thru brake bulb filement. Unless you have it working off a relay.

[John Schmidt]

Have you perchance added any LED lights for the brake/running lights? If so, you need to install a Normally Closed relay in the ground circuit from the servo. My cruise became intermittent (and irritating) on a trip a couple years ago and I found a loose ground as was suggested earlier.

[Lt.Gene]

Thanks for the input/suggestions.  I will try each and hopefully one is the solution.

[Lt.Gene]

Ark714--
I don't think I quite understand your instructions.  I pulled the back off the servo, exposing the circuit board and the pins on the back of the unit--is that what you meant?  Scared me some when it popped off in my hand.  Do I test those pins or the wires entering the plug, which has power where the wire enters the white pin clip.  Actually, tested all the wires that should have power--the red & orange, the gray which powers the lights for the panel...checked the grounds....man, I am at a loss.  Cannot get the LED to light anymore when testing with the SET button on the controller.  Is my servo shot?

[Lt.Gene]

Well, just to close out this one thread.  After talking with a tech from Audiovox and running through his suggestions to no avail, I connected for the second time, a new control panel purchased for $35 and viola, it lit up and the servo LED operated as noted in the manual for a "good" test.  So, I will put her back together and hope this is it.  Thanks for the suggestions.

[Lt.Gene]

    Well, wrong again.  The darn thing stopped working altogether so I bought a new one from a thread I found here for $170.  I believe the company name was Murph's...anyway, got to put it in this weekend and see how things go.