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EarlyBay Forums
Technical
Brake warning light and switches
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<blockquote data-quote="67westy" data-source="post: 621563" data-attributes="member: 14107"><p>So with one switch the warning light won't work either with a 2 or 3 pin switch as the warning circuit relies on one switch working to put power to the warning light.</p><p></p><p>The advantage of 2 switches is that of one of them fails the other will still operate the brake lights, with a single switch that fails and your brake lights won't work.</p><p></p><p>These diagrams I found show how the 3 pin setup works, I guess if you had one 3 pin switch it would light the warning light every time you brake? I guess it would show the switch is still working!</p><p></p><p><img src="https://uploads.tapatalk-cdn.com/20200513/b19f5512da27528d774df05ad2ff48c3.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Sent from my Pixel 4 using Tapatalk</p><p></p><p></p><p><img src="https://uploads.tapatalk-cdn.com/20200513/61435b75faf78e87c35230ad6a5d4a03.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="https://uploads.tapatalk-cdn.com/20200513/cbd42af993daddf9270a601b4e989bd0.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="67westy, post: 621563, member: 14107"] So with one switch the warning light won't work either with a 2 or 3 pin switch as the warning circuit relies on one switch working to put power to the warning light. The advantage of 2 switches is that of one of them fails the other will still operate the brake lights, with a single switch that fails and your brake lights won't work. These diagrams I found show how the 3 pin setup works, I guess if you had one 3 pin switch it would light the warning light every time you brake? I guess it would show the switch is still working! [IMG]https://uploads.tapatalk-cdn.com/20200513/b19f5512da27528d774df05ad2ff48c3.jpg[/IMG] Sent from my Pixel 4 using Tapatalk [IMG]https://uploads.tapatalk-cdn.com/20200513/61435b75faf78e87c35230ad6a5d4a03.jpg[/IMG][IMG]https://uploads.tapatalk-cdn.com/20200513/cbd42af993daddf9270a601b4e989bd0.jpg[/IMG] [/QUOTE]
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EarlyBay Forums
Technical
Brake warning light and switches
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