RAM 2500 Truck 4WD V10-80L VIN W (1997) - Horn Relay Location | Page 115
Horn Relay: Description and Operation
SYSTEM OPERATION
The horn relay is a International Standards Organization (ISO) micro-relay. The terminal designations and functions are the same as a
conventional ISO relay However, the micro-relay terminal orientation (or footprint) is different, current capacity is lower, and the relay case
dimensions are smaller than on the conventional ISO relay
The horn relay is a electromechanical device that switches current to the horn when the horn switch on the steering wheel is depressed. See the
Testing for more information on the operation of the horn relay.
The horn relay is located in the Power Distribution Center (PDC), in the engine compartment. Refer to the PDC label for horn relay identification
and location.
If a problem is encountered with a continuously sounding horn, it can usually be quickly resolved by removing the horn relay from the PDC until
further diagnosis is completed. The horn relay cannot be repaired and, if faulty, it must be replaced.
