Wiper switch differences, trying to add an elec. washer switch |
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Wiper switch differences, trying to add an elec. washer switch |
peteyd |
Feb 6 2012, 10:06 PM
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#1
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Senior Member Group: Members Posts: 705 Joined: 27-March 08 From: Elora, Ontario, Canada Member No.: 8,858 Region Association: Canada |
I am trying to figure out what I have here. I noticed that there are two different wiper switches available. 70-72 and 73-76.
This is the one that is in the best condition. Notice that it only has four pins on the left side. I have already attached a switch that I got from davep, which will trigger my electric washer pump that I plan to install. This is the second one that I have. Being in worse condition out of the two. It has five pins on the left side. The extra one being a brown, which is ground correct? The switch is also different in that the plunger that would activate the washer fluid has an electrical contact I am running a wiring harness from a 72 car. Which switch do I need to use? Am i missing pieces from the first switch maybe? Im stumped here... Pete |
Bartlett 914 |
Feb 29 2012, 02:23 PM
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#2
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Advanced Member Group: Members Posts: 2,214 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
IIRC the brown white wire to the intermittent relay uses 3 signal levels. At ground, the intermittent wiper function is off. Pulse to 12 volts (as in a wiper stalk pull) and the intermittent relay will cause the wipers to give a few wipes. Open, and the intermittent function works. Changing the resistance to some extent (not enough to be useable) will change the delay time. If you put a relay with one grounded to this connection Washer pump coil or relay coil), the signal to the intermittent relay will appear to be grounded and no intermittent function.
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