Adding Cruise Control to C1/C2 Corvette
& probably many other vehicles

 

Part list:
Audiovox CCS100 Universal Cruise Control (Amazon)      $89.95 ** Jan 2012 now ~$175 eBay **
Dakota Digital HND-3 Early GM Handle                 $48.45

Fairly simple install even with "WEAK" instructions. Click here to view instructions I contacted Roy (67-427ci) and he provide me with his write-up & photos which made job a breeze. Only variations is where you mount the servo assembly, how you mount the cable to the carburetor linkage and switch settings.

Kit is universal, which means it can be adapted to anything that moves and is very popular with the Motor Cycle Community. There is parts galore that most of will be left over to be tossed.

The servo cable is about 4' long and servo wiring about 5' which gives you (1) lot of mounting options or (2) a lot of extra cable/wiring to stuff somewhere. My battery is on drivers side so I mounted server on the passengers side frame rail using a hole where battery tray normally mounts thus I used all cable/wiring length. You will have to decide where/how to mount. Need to route wiring through firewall, Bubba had a couple of holes that I had covered so I used one of those. Also you will need to make you own bracket which is pretty simple using stuff supplied. Also you will need to supply vacuum to the servo, I tapped in the vacuum advance line with supplied "T" fitting. Just make sure you tap into FULL manifold vacuum.

I used the Dakota Digital Handle (HND-3) that replace existing directional handle. I had to do a little filing on handle to get it to fit snuggly.They also make a HND-1 which clips over existing handle which means you don't have to pull steering wheel/hub. I routed wires from handle outside of column because I didn't want to pull and rework column at this time but will add to list of things-to-do next winter.  NOTE: My column is Flaming River Tilt so yours may be a little different.

Just for clarification this kit works with just Tach input (1 wire from neg (-) side of coil). No need for magnets or VSS input.


Items of NOTE

 
LED Taillights


In order for the CCS-100 Cruise Control to function, the Servo must be grounded through the purple wire (which is connected to the brake light circuit). When brakes are applied, the bulb lights and the ground is broken. The cruise is therefore canceled. If you have LED taillights the Servo will not function because it is not grounded properly. Resistors or relays can be used to get around this problem.

Some have use resistors but I elected to use a relay as I just happen to have one in the parts bin from a previous project. You can use either a SPDT 5-pin relay (Single Pole Double Throw) as I did or a SPST 4-pin relay (Single Pole Single Throw).

SPDT wiring (SPST will be a little different):

This relay consists of a coil (terminals 85 & 86), a common terminal (30), a normally closed terminal (87a), and a normally open terminal (87). At rest, there is continuity between terminals 30 and 87a. This grounds the Servo. When the coil is energized, continuity between terminals 30 and 87a will be broken. Since the Servo is not grounded anymore, the cruise control is then canceled.
 

- Purple wire from Servo to terminal 30.
- Ground terminals 87a and 85.
- Put a plug on terminal 87 (not used).
- Brake pedal wire to terminal 86.

Dakota Digital HND-3

If you chose to use the HND-3 make note it is a "NORM CLOSED" switch instead of "NORM OPEN" as is the supplied switch that is include with the CCS-100 kit. I don't know what type the Dakota Digital HND-1 is.
** Plug is exact match for CCS-100 kit **


Switch Settings

      MANUAL / AUTOMATIC TRANSMISSION SELECT
        WHEN INSTALLING THIS KIT INTO VEHICLES THAT HAVE A MANUAL TRANSMISSION, YOU MUST
        REMOVE THE BLACK JUMPER CONNECTOR LOCATED TO THE LEFT SIDE OF DIP SWITCH #1.
     NOTE: If the vehicle is a manual transmission and does not have a VSS wire, the cruise will operate from tach
        signal only. Program dip switch #1 and #2 for 8000 PPM and move dip switch #3 to OFF position
        ** Supplied instructions state set for 4000 PPM but Roy (67-427ci) clued me in on the 8000 **

 

Here is a few photos of Roy's (67-427ci) install

67-427ci Servo Mount 67-427ci 4bbl setup 67-427ci 3X2 Setup

Photos of my install
 

Audiovox CCS100 Dakota Digital HND-3 Switch Supplied
with Kit
Bracket Servo Mount Servo Mount
Throttle Connection Thru to Firewall  Steering Wheel Removed
Hub Puller Original Handle Dakota Digital HND-3

 

First test after install cruise did not work. Check everything but no-go so I started doing internet searches and came up with the LED taillight problem. Replace one taillight with OLD 1157 bulb and while system did NOT work correctly it at least tried. So had to again remove A/C ducts to get to wiring under dash to add relay to eliminate LED problem. Tried various setting and double check wiring but no-go. Call help desk but still unable to solve. Getting ready to check everything again when I was cleaning up stuff and happen to notice that on the end of the box the HND-3 came in was the word "CLOSED" !!!
Big light-bulb came on so I changed switch setting from "OPEN" to "CLOSED" and took Vette for a spin and like magic everything work A-OK. Only drove a few mile but system work just fine, hills ok, shut off with brake or clutch depressed and kept speed with in a couple of MPH.

So now I'm ready for CF Cruise-In "X" in Bowling Green J J

Update 4/24/2009

After a 50 mile round trip (interstate highway) all I can say is system works GREAT !!!  Maintains speed up/down hill just like a factory cruise. Accelerating to pass in either 4th or 5th gear did NOT affect settings or deactivate. Depressing clutch will automatically rev engine FAST so I decide touching brake is way to temporarily deactivate. Clutch over rev protection is good insurance if you forget you've got cruise on.

Update 4/24/2012
Audiovox quit manufacturing the CSS=100 but they still pop-up on eBay. Also there is on eBay a clone that claims to be exact copy of original using original tooling.

I install an original I got off of eBay ($150) on my 1965 El Camino - 327/350 hp. Use same hook-up and setting as above. Only thing was mounting bracket dual-quads vs. Holley 650. (see below)
 

Yes that is my '65 El Camino install
 

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2009 GB Janssen