What Is This Relay For?

The black from headlight switch term R is not fused separately as it is parallel with the running lights, IE tail and front park. The black trace is fused as it comes straight off the fuse block.


The whole unit Is really simple in design. The black/trace +12v energizes an internal relay via case ground to bypass the buzzer when the key is in run position. When the key is off the SPST relay de-energizes and allows the +12v from the black term R headlight switch to one side of the buzzer. Ground path to the buzzer is achieved when either door switch grounds and or door opens.