Truck has a static strap. Noise is located in the control panel. Tilt,side shift, or any drive motion will cause the forks to lower. Steer has no effect on unit. Keytroler suggested shortening all leads and moving inverter out of truck, like on hood or dash panel. Had a small effect, it actually made it worse. I was told that an AM radio will pick up noise and help to zero in on it. Anyone ever try such a thing?