Question about Cars & Trucks
97 Passat Dash Light Dimmer test.i want to test the rheostat that dims the dash lights. I've removed the light switch assembly it is in one unit a rotary/pull knob for the parking lights headlights and driving lights and a thumdial rheostat for the dash light dimmer. One large electrical connector goes into the back. I'd like to test the rheostat and need to know which terminals I need to check resistance between. Alternately if I knew the wire color that went to the dash lights I could trace it back. thanks
If you already have the switch out, go ahead and replace it. the carbon brush that changes the resistance for dimming is old (1997). Test by one lead on your meter to the brush. The other lead to the large terminal on the rheostat coil. Rotate the shaft to see if resistance varies.
Posted on May 18, 2017
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Posted on Jan 02, 2017
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