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Old 03-31-2020, 05:39 PM   #9
rotorwrench
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Join Date: Jun 2010
Location: San Antonio, Texas
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Default Re: LED taillights and how to wire turn signals

Most turn signal systems have an interconnect with the brake light in the signal control switch so that when a signal direction is selected, the brake light function circuit is opened for that side while the opposite side is still functional for the brake light. If it isn't set up this way then it isn't a very good system. It's important to have the diagram for the one you have. They may not be all the same. Most modern ones are the same but the older ones is anyones guess. It may take a while to figure out an old unit that has faded cloth covered wire.
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