electronic cruise control

I have been researching a cruise control also. From what I have gleaned the Audiovox CCS100 needs a vacuum source and possibly a vacuum reservoir. Audiovox also has a model 2501316 that is more money (all electronic) and no vacuum needed. Both the Audiovox units are made by Rostra. The Audiovox CCS100 is equivalent to the Rostra 250-1176 .The Audiovox 2501316 is equivalent to Rostra 250-1223. A control switch is included with the CCS100 and Rostra 250-1176. A control switch must be purchased separately for the Audiovox 2501316 or Rostra 250-1223.

Also found this.



12 POSITION SWITCH
The Rostra Cruise Control Company recently changed their All Electric Cruise Control from a 10 position Programming Switch configuration (DIP Switch) to a 12 Position Programming Switch configuration w/o an assembly part number change. So if you recently, within the last 6 month, purchased & installed a Rostra Ultra II/World Cruise Control, it may be
helpful to verify that the optimum program switch setting is accomplished. Rostra's installation manual goes in great detail about & it is clear as to which setting to use for the GMC configuration except for the "Engine/SetUp Timer" Program switch 7, 8 & 9. After several discussion with Rostra's Technical Service Dept., it appears that these switches should be set in the off position (7, 8 & 9 OFF) for best performance. The "Engine/SetUp Timer" function is pertaining to "Engagement Response Time". Rostra recommends that this
function be set for LOW (8 Cylinder Low.......Sw 7, 8 & 9 OFF) initially for best performance. However, if the engagement action is sluggish, then & only then the function should be change to the HIGH position (7 & 8 OFF, 9 ON).
The Programming switches are located under the rectangular shaped rubber grommet on top of the Cruise Control Actuator Module (Black Box). It may be desirable to verify which switch configuration that you have & if it is the 12 switch configuration, then verify that Switch 7, 8 & 9 are OFF as recommended by the Rostra's Technical Dept. You can contact Rostra's Technical Dept. directly by phone 1-800-782-3379 for clarification/additional information. Note: Use of a small mirror & light may be desirable to observe the switches w/o moving the Black Box.

Cruse Control Drop outs

FYI
Some of you that have a modern CC such as the All Electric Rostra Unit should be aware that the CC uses the filament in the stop Lites to
connect to a chassis ground. This is a safety feature so that the CC is not allowed to operate or be turned on if the Brake Lite switch activates
the stop lites. Upon installation of LED type brake lites, the connection to chassis ground is no longer available thru the LED (no filament element). Therefore, if you install LED type Brake Lites & have a Rostra CC, the CC will not activate since the Brake Lite filament ground connection will not exist. But there is better to connect the All Electric Rostra CC such that the Brake Lite is not in the circuit. Remove the Violet wire from the cold side of the Brake Switch & connect it to ground thru the Original CC Electric Dump switch (normally closed switch & is located on the top end of the brake switch with a Pink & a Brown wire connection). Cut the Pink & Brown wire from the Dump Switch. Connect the end of one of the Dump switch wires to a good chassis ground & connect the Violet wire to the other Dump Switch wire. That is all there is to it & everyone that has an All Electric CC should consider use of the Dump Switch in lieu of the Cold Side
of the Brake Lite switch as stated in the CC installation book. This modification will minimize the CC drop outs that occur when the turn signal is activated.
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