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Cadillac Repair/1995 Cadillac Fleetwood electrical wiring

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Question
I have 1995 Fleetwood, my stock alarm fuse keeps on burning out, now when i turn my key switch my trunk opens and my headlights stay on,

Answer
Hello,

Yes, you have a real problem. I just responded to another person with this factory installed junk.

Everything in the car's electrical system is intergrated with the alarm as you are finding out the hard way. I quit working with these factory installed systems in 2000. I was so fed up, that I refused to service any car with a factory alarm. Parts were no longer available from one to 5 years after production. Factory schematics were wrong or at least did not match with the car I was working on.

Its unfortunate you have these issues, but trying to find a dealer tech that worked on these systems in 1994 is one challenge. The next is getting the correct schmatics, component locations and parts. If there is something burning up the module, it may be impossible to find.

The chickens have come home to roost. The factory should never been allowed to install security systems.

First, they were ineffective, gave the buyer a false sense of security and the system was obsolete when the car was purchased new. You can break a glass, climb in and out and never trigger the alarm!

You could destroy the door ripping out the door lock and never trigger the alarm. Same went with the trunk. In fact, the only time it would trigger is by opening the door!

Now you are stuck with a GM issue and as far as their concerned you should not be driving a car that old. They are in the business to sell cars!

I would love to assist you, but can't. You cannot successfully bypass this system without losing other important functions in the vehicle.

The best I can tell you is to obtain the electrical schematic for the car and either you or a good electronic tech trace the wiring down looking for an obvious wiring problem.

You might want to go to a junkyard and see if you can find another module first.
The problem you will run into is that you may find the same year and make, but not equipped with the factory alarm.

I truly wish you nothing but the best, but all I can tell you is that you are not the only person with these issues.

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Rob Painter

Expertise

Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?

Experience

Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.

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