i think i might have an idea of what you are talking about though when you say you have power on 3 pins on the relay.the way a relay works is it can be either high or low controlled (power or ground).for a low side relay you will have power going into the control side of the relay.on the coil side you also have power to one side of the coil.when ground is applied to the other side of the coil the relay will jump and pass power through to the other side of the power side.so if you are showing b+ on three pins the most likely scenario is that you are seeing the voltage coming through the coil side of the relay.if you ground that pin the relay will actuate.the other scenario is that if you are just lifting the relay and checking the pins while the relay is active you will see power on the coil side and both pins of the relay output side.there is another possiblity as well..if there is a short to power in the relay wiring
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