I know this is a Mustang site but I was hoping that someone with some knowledge in this area might chime in.
I have a 98 Expedition Eddie Bauer with a 5.4 and is fully optioned. I bought the truck used about 2 years ago with 69k miles on it.
I can see that there used to be a aftermarket alarm with remote start in it but it was removed before I bought it (got it from a used car dealer). The keyless entry works but the factory alarm doesnt. The pass key doesnt work either. I can lock the doors with the remote but the security light on the dash doesnt flash and I can open the door without the alarm going off. I can also start the car with a blank valet key. I cant find any clipped wires under the dash either.
Curious point: While I was installing my hid kit I decided to ground the ballast at the factory ground behind the drivers headlight. When I removed the bolt holding the 3 factory ground wires I heard a buzzing coming from under the hood and the factory alarm suddenly worked. When I looked at the dash the security light was blinking and the alarm went off when the door was opened (lights flashed too). The truck also would not start without the pass key. When I put the bolt back everything stopped working again.
Obviously there is something disconnected somewhere. Ive had the whole dashboard apart and cant find anything. Does anyone have an idea where I can look? Maybe a wiring diagram that might help? Ive tried the Expy sites and got no results.
I have a 98 Expedition Eddie Bauer with a 5.4 and is fully optioned. I bought the truck used about 2 years ago with 69k miles on it.
I can see that there used to be a aftermarket alarm with remote start in it but it was removed before I bought it (got it from a used car dealer). The keyless entry works but the factory alarm doesnt. The pass key doesnt work either. I can lock the doors with the remote but the security light on the dash doesnt flash and I can open the door without the alarm going off. I can also start the car with a blank valet key. I cant find any clipped wires under the dash either.
Curious point: While I was installing my hid kit I decided to ground the ballast at the factory ground behind the drivers headlight. When I removed the bolt holding the 3 factory ground wires I heard a buzzing coming from under the hood and the factory alarm suddenly worked. When I looked at the dash the security light was blinking and the alarm went off when the door was opened (lights flashed too). The truck also would not start without the pass key. When I put the bolt back everything stopped working again.
Obviously there is something disconnected somewhere. Ive had the whole dashboard apart and cant find anything. Does anyone have an idea where I can look? Maybe a wiring diagram that might help? Ive tried the Expy sites and got no results.