Boy, I wish I could have my first post back!?! I don't remember half of what I said!?! Wish AF didn't loose it!?!
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Wiswind, the moderator, has in his signature several photos, which may contain them. Possibly Autozone has pictures of them in their repair section for your year or earlier years will be similar. Basically, they are all about the same. Behind each tire, you will see a black wire thinner than a pencil, looping down to the axle area to the sensor. In the front, a gear is mounted on each driveshaft with the sensor aimed at the gear and sitting aft of the axle. Depending on rear brakes, the gear ring and sensor could be outside behind the brake backer plate similarly arranged like the front or inside some drum brake arrangements. I would think brake cleaning spray would be good engough, maybe a rag too. Make sure all wiring connections are tight, wiring in good condition, sensors are firmly attached, the toothed rings do not appear damaged.