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The SpeedoHealer (SHV4A) kit can be programmed to correct from -99.9% to +9999.9%. For this demonstration, I'm programming memory bank A to correct +0020.0% and memory bank B to correct -50.0%. If ever a person simply wants to clear all settings back to zero, once you're in the correct memory bank (A or B) you simply hold down both buttons until "E" shows on the display.
J01 Plug-n-Play Kit fits '98-'06 Wrangler TJ, '04-'06 LJ, and '98-'01 Cherokee XJ...for all other vehicles with 3-wire speed sensor (signal, power, ground) use the Universal SHV4A-U01 splicing kit.
