has ANYONE else every heard of this issue? PPPPUUUUHHLLLEEEEZZZEEE!?!?!?! Adsitco states it's not likely the amplifier, more likely the speed sensor. The only way to test this is with an oscilloscope, which just so happens to be absent from my list of desirable 'Tools to Purchase'... I've tested the speed sensor with voltmeter but only up to approximately 30-35mph, while on jack-stands. All appears well but I absolutely HATE 'throwing parts at a problem' without knowing its actually proven to be defective.

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Erik deVries
ASE Certified
Automation Engineer
1985 Mercedes 300SD 375,xxx miles, Euro-headlamps, Bosch HID, Boston/Alpine audio
1982 Mercedes 300D 358,000 miles Boston audio, FOR SALE
1997 Dodge 2500 4x4 long bed ext cab Cummins 5.9L, BFAF, ATS trans, billet converter, #0 torque plate full-forward, star wheel full forward, (~295HP & ~680lb/ft G-tech), 5-inch turbo-back exhaust, VIAIR on-board air, LOUD Nathan K5 TRAIN HORNS , 35-inch; BFG Mud Terrain, 2006 Ram 2500 17-inch Aluminum wheels.