 Run a washer pump through rear defrost switch? |
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| PDXMike |
 May 3 2018, 03:09 PM
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Slowly Learning  Group: Members Posts: 111 Joined: 20-December 10 From: Portland, OR Member No.: 12,501 Region Association: Pacific Northwest  |
I am installing a windshield washer fluid pump. I have a rear window defroster that doesn't work, and that I have no plans to use/fix. I want to use that switch to power the pump. Do I need to use a relay, or can the switch handle that kind of load for short bursts?
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| brant |
May 3 2018, 03:24 PM
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914 Wizard Group: Members Posts: 11,624 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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you can modify or replace the actual wiper stock on the column to incorporate a switch onto the control stock
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| Dave_Darling |
May 3 2018, 04:45 PM
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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Not on an early car, you can't...
The defroster switch is made to run a relay feeding a pretty good-sized current draw. Even though the motor might not be as large a load (and definitely not as continuous as a defroster) I would still play it safe by using a relay. --DD |
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