Does anyone know where i can splice into a wire for the vehicle speed, can I splice into the speedometer wire? and if so which color is it. I'll do a complete write up for what Im doing when I am done. I don't think this one has ever been done, but I may be wrong. Just wait n see. hehe

 

0~12v corrected VSS pulse is on the gray/black wire. It can be found at the speedometer, PCM, cruise module and GEM.

 

I simply ran a 22-gauge 2-conductor wire outside of the cab and tapped into the VSS signal wire under the driver's seat. I put a toggle switch on it to kill the signal, which releases the speed restriction.

HOWEVER, BE CAREFUL!!! Driving with no VSS signal is NOT a good idea! It kills your shift-point signal, speedometer and odometer, cancels all rear-wheel ABS functionality, trips a CEL and an ABS light, and can really mess with your torque-converter. If you're traveling at a high rate of speed and kill your VSS, it is likely the Torque Converter will release and you'll lose all ability to maintain forward momentum, causing you to potentially roll to a stop in the middle of the highway!!!

 

Im not doing that mod, I like my speed restriction, lift + high speed= bad news.

The reason i was asking is I just installed an OHC out of a 97 Blazer. A VSS signal is needed for the temp sensor. I guess im not the first to do this, I think captain obvious did it as well. I got everything hooked up, and everything works. I still have to fix the temp sensor. I grabbed a bullet probe from work hoping that it would work. I placed the sensor in my third brake light. Its about 30 degrees off at night, and 10 in the day time. Daytime. Its 62, will read 51. nightime, its 46, will read 22