Mercury 5C3Z-13350-AA Direction Indicator Relay

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On prior models to 1996 the turn signal flasher is a small canister shaped unit in the main interior fuse panel which when engaged lights up the turn signal lights. In later models, this function is performed by an SLLC located below and to the right of the steering column, and in these cases flasher canister cannot be removed or replaced; testing of the module and its circuit is suggested to be made by an electrical service shop. A functioning flasher unit will click, and if turn signals don't work on one side and give the clicking noise, or if they blink faster than normal, it could be a bad bulb. If neither of the turn signals blinks then possible problems may be a fused out flasher unit, a defective switch or a loose connection; one should check the fuse block for turn signal fuse and electrical connections for shorts before replacing the fuse. To remove the flasher, it is pulled out of the fuse block, and before inserting the new unit, it should be as that of the original flasher, the procedure of removal being the reverse of implementation. In the same way, the hazard flasher, a small canister shaped unit that is found in the main interior fuse panel up to models produced up to 1996, works like the turn signal: the later models were fitted with a solid-state lighting control module. The hazard flasher can be replaced by pulling it from the back of the fuse block, replacement unit must be of the same type as the removed unit and installation process is a reverse of removal process.

On prior models to 1996 the turn signal flasher is a small canister shaped unit in the main interior fuse panel which when engaged lights up the turn signal lights. In later models, this function is performed by an SLLC located below and to the right of the steering column, and in these cases flasher canister cannot be removed or replaced; testing of the module and its circuit is suggested to be made by an electrical service shop. A functioning flasher unit will click, and if turn signals don't work on one side and give the clicking noise, or if they blink faster than normal, it could be a bad bulb. If neither of the turn signals blinks then possible problems may be a fused out flasher unit, a defective switch or a loose connection; one should check the fuse block for turn signal fuse and electrical connections for shorts before replacing the fuse. To remove the flasher, it is pulled out of the fuse block, and before inserting the new unit, it should be as that of the original flasher, the procedure of removal being the reverse of implementation. In the same way, the hazard flasher, a small canister shaped unit that is found in the main interior fuse panel up to models produced up to 1996, works like the turn signal: the later models were fitted with a solid-state lighting control module. The hazard flasher can be replaced by pulling it from the back of the fuse block, replacement unit must be of the same type as the removed unit and installation process is a reverse of removal process.

There should be no continuity between terminal 30 and 87 when the relay is de-energized.

If a faulty relay is suspected, it can be removed and tested using the provided procedure or by a dealer service department or other repair shop. Defective relays must be replaced as a unit.

If the relay fails any of the above tests, replace it.

If the relay fails any of the above tests, it should be replaced.

If you can't determine the correct connection from the wiring diagrams, you may be able to determine the test connections from the provided information.

The electronic flasher unit is located in the relay box number 1 behind the glovebox.

When the flasher unit is functioning properly, an audible click can be heard during its operation.