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Now you can add intermittent wipers to your classic GM car or truck. The addition of this module gives three intermittent delay options to the factory slow and fast speeds. Uses the stock switch and motor for a totally stock appearance. Installs between the switch and factory harness. The factory switch operation is changed from a mode selector to a mode sequencer allowing the user to sequence up or down through six modes (off, 1 wipe every 8 seconds, 1 wipe every 5 seconds, 1 wipe every three seconds, continuous slow, and continuous fast).