my speedo and odometer recently stopped working...ck engine lt and battery and brake light all on. Checked all fuses not an issue..the site says it's the speed sensor. The Speed sensor with the white gear on the bottom goes on the top of the car...it seems to be located between the battery and rear mount. Do I only need the 1 sensor? I see a lot of after market ones that DO NOT have the white gear wheel...I can't imagine it works on an 2004 evo 8. There is this guy on Ebay selling a used set...i was not aware there were 2 sensors Could you guys tell me where the 2nd one is located? 1st one is on top of the transaxle the.. thanks