The only difference between the OEM and this was a small tab that holds the block in place when installing the nut. The pull tab on the OEM prevents the unit from rotating when the key is turned to the "on" position. There is no tab in this block. My fix for this was to put a small rubber o-ring on the block through the hole in the dash, tighten the nut on the block and this will keep the block from rotating in the dash. Works perfectly. Thanks. Enjoy
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