Originally Posted by vincentblood024
no the steering wheel things check out fine with a voltmeter, and all the brake lights and parking lights are on ive taken apart the dash to look at the backside of the instrument cluster but there were no bad wires from there to the firewall. Im still wondering if the instrument cluster itself can cause the light to not come on and the cruise to not work. Or something possibly at the transmission because i cant get the cruise to work at all. The light will also not come on when the accuator test is done its the only one on the instrument cluster besides the 4lo light.
There are actually three switches within the brake switch......only one of which is used to turn on the rear brake lights so the fact that your brake lights come on is meaningless.
If you look at the brake switch, pin 1 and pin 2 are normally open and close when the pedal is pushed...this is for the brake lamp.
Pin 3 Violet/White and pin 4 Violet/Yellow are used for the cruise control and should measure closed with the brake pedal off and should be open contact when the pedal is depressed.
Pins 5 and 6 are also normally closed and are used as a secondary brake switch signal and goes to the transmission so this may also have some effect.
This above information is from the 2006 KJ circuit diagrams...may be slightly different to the 2005 model so you need to download the correct diagrams and the manual should also give you a description of how cruise control works