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Old 11-05-2017, 09:04 PM   #1
Richard
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Join Date: Mar 2009
Member Number: 969
Location: So Cal
Posts: 198
Default Testing windshield wiper switch/heater switch

Have a project 79 Traveler/345/4bbl/727TF/dana 44/3.54 gears. I am going through the dash wiring harness on this restore project, I have the windshield wiper switch and heater switch out. They look very clean (truck's been sitting for 30 yrs in my garage). I want to know if there is a simple testing that can be done to see if the work. Any Ideas? and thanks.
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Old 11-06-2017, 08:07 PM   #2
Zaedster
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Join Date: Jul 2014
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Location: Grass Valley, California
Posts: 79
Default Re: Testing windshield wiper switch/heater switch

Quote:
Originally Posted by Richard View Post
Have a project 79 Traveler/345/4bbl/727TF/dana 44/3.54 gears. I am going through the dash wiring harness on this restore project, I have the windshield wiper switch and heater switch out. They look very clean (truck's been sitting for 30 yrs in my garage). I want to know if there is a simple testing that can be done to see if the work. Any Ideas? and thanks.
Richard,

A simple way of testing your Windshield Wiper Switch/Heater Switch can be done with just a simple multimeter. Preferably a digital multimeter with a continuity setting. With the meter set on that setting, touch both probes together. As a result you will hear a loud constant beep. That means that the circuit is connected...etc. So, get your black negative wire probe test lead and affix it to the metal housing of the switch(switches ground). Then grab your red test lead and put it on one of the several prongs on the switch, turn the switch on to whether speed setting/prong you are one and see if there is continuity, thus current is flowing thru the circuit.

Last edited by Zaedster; 11-06-2017 at 08:13 PM..
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