Windshield Wipers - Modified Pulse System: Description
NOTE:
Refer to GM Pulse Control System in this section for Nova, Omega, Skylark, and Ventura models.
Modified pulse wiper system combines the standard two or three speed operation with a variable delay action wipe cycle. Delay time, cycles wipers between a minimum of zero seconds (or low speed) and a maximum of 12 seconds depending on switch delay mode position. Modified pulse motor is similar to round motor except for the red wire which provides a battery positive circuit from ignition switch to the pulse relay when the gearbox is energized.