GM Truck '78-'83 with Factory Wiper Delay

Replacement Delay Module

IMG_8041_2-20260728104926
  • Replaces the factory delay module
  • Interfaces to the factory delay switch and factory wiring harness
  • Use it to upgrade from the standard two-speed setup by adding this module and a new switch with the delay knob
  • You will need to reuse the factory connector housings for the easiest installation
  • One year warranty

$134.99 PN 13047

Replacement Wiper Delay module for GM Square Body Trucks from 1978-1983

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Is there anyone who does not appreciate the intermittent wiper function? Being able to set the wipers to swipe once every so-many seconds - that is convenience. Whether it be a light rainfall or just some early morning mist, the intermittent function is nice to have. Really nice.

When GM offered this feature on their trucks in 1978, it was quite a luxury. Unfortunately, those modules fail over time, sometimes quitting completely or sometimes just doing really weird things without the driver touching the switch. These modules have become very hard to find (and expensive). Now you can replace that 45+ year old module with one that carries a warranty. This module will plug into the factory harness and switch just like your factory module (you will want to remove the connector housings from your old module and reuse them with this module for the easiest installation.)

$134.99 PN 13047

Replacement Wiper Delay module for GM Square Body Trucks from 1978-1983