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The 1998 Ford Expedition headlight relay switch is located in the fuse box. The fuse box can be found in the engine compartment. The headlight relay switch will be in the third column.
remove headlight switch
There are several possibilities; headlight switch, headlight breaker or fuse, connectors, dimmer switch.
There is a relay switch for the signal flasher's, on your 1997 Ford van. The relay switch is below the dashboard on the drivers side.
On the passenger side fire wall in engine compartment !
he headlight relay switch should be under the hood in the fuse box. Not sure which one turn the lid over it should have a diagram.
first check the horn relay, if that dosent work your horn switch is probably stuck try checking it!
Under the hood look at the inner fender close to the battery, it should be right there to the best of my knowledge.
headlight relays (nxt to battery) or the actual switch in the car ...check you have 12v at the red wire behind the switch...could even be the switchable relay the headlight wires run to with a purple an white wire
the headlight on my ford explorer keep going on and off on it does not go off on the dashbroad i want to no what it is
If the Aerostar is not set for auto lock when the vehicle is put into gear, check the door lock, switch. Also check the lock relay and wiring for a possible short.
there is a fan relay under the bonnet behind the left headlight , it has a rubber cover over it . does this help?