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<blockquote data-quote="stones" data-source="post: 1033797" data-attributes="member: 540734">You make it so any current coming from the battery needs to go through the bulb before it gets to the electrical system, the brightness of the bulb is an indicator of how much current is being drawn.To see if a relay is stuck in the on postion you hook up the bulb and assuming it is glowing and showing a current draw you get a buddy to start disconnecting relays, if you disconnect a relay and the bulb suddenly dims or goes out in responce then you have found a relay that is on when it should not be.If no relays are found to be defective move on to the stereo components, pull the fuse to the amp to cut power to it, pull the fuse for the radio .... basically you start dissconnecting things untill the bulb goes out, the thing that make the bulb go out when you dissconnect it is the offending component.As for polarity, positive to the positive battery terminal negative to the positive battery cable.</blockquote>

[QUOTE="stones, post: 1033797, member: 540734"] You make it so any current coming from the battery needs to go through the bulb before it gets to the electrical system, the brightness of the bulb is an indicator of how much current is being drawn. To see if a relay is stuck in the on postion you hook up the bulb and assuming it is glowing and showing a current draw you get a buddy to start disconnecting relays, if you disconnect a relay and the bulb suddenly dims or goes out in responce then you have found a relay that is on when it should not be. If no relays are found to be defective move on to the stereo components, pull the fuse to the amp to cut power to it, pull the fuse for the radio .... basically you start dissconnecting things untill the bulb goes out, the thing that make the bulb go out when you dissconnect it is the offending component. As for polarity, positive to the positive battery terminal negative to the positive battery cable. [/QUOTE]

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