Door Lock Relay Module for Keyless Entry Installations

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Most aftermarket car alarms, remote starts and keyless entry systems have door lock outputs that work with a 'negative' electrical pulse. The problem is that many vehicles have doo r lock systems that work differently. This extremely versitile relay module is used to adapt aftermarket systems with standard negative pulse outputs to vehicles with: Positive pulse door locks Reversal rest at ground (also known as '5-wire reverse polarity systems) High current negative pulse trigger Vehicles with no power door locks - use the module to power aftermarket door lock motors (motors not included) Mercedes vacuum lock systems Product may not work in vehicles manufactured for sale outside of U.S. & Canada. Show more