First the facts. Audiovox CCS-100 use to work, then would work intermittantly, now doesn't work at all. It was always smooth but sometimes would either just stop working or would take awhile playing with the switch before it would work. Now for the troubleshooting I've done. I have a spare CCS-100 to play with. Troubleshoot switch and works fine. Also replaced switch to verify and it's not the switch. Double checked all the wiring and connections and all appear to work fine. I have a Hondaline Top Box installed with LED spoiler and had a relay installed. I checked the relay and it appears to work fine. I took the relay out just to test and no difference. I took the servo apart and replaced the entire bottom part (control circuit board and vacuum) but still nothing. The top part of the servo that contains the linkage is clean, not split or broken, and opens and closes easily when I twist the throttle handle. I inserted a video scope into the location of the throttle linkage and it appears to all be intack. With the bike on it's center stand, I put it in gear, got up to above 50 and above 3000 rpm and engaged the cruise. I could see the linkage just barely move and the rpm drop a bit before coming back up to normal. But no cruise. It "appears" the vacuum isn't strong enough to pull the chain or the linkage and hold it. I checked the vacuum check valve and it works fine. I checked the hoses (I have a canister also) and all the hoses hold vacuum from the check valve to the servo. The bike runs fine with no rough idling or anything abnormal. It's "possible", although unlikely, my test servo and/or switch are bad but the odds are against that. I supose the Map Sensor could be causing the problem but really want to find something else before taking the tank and top of the engine apart...again. Thanks...
