A fuse of that size will only blow when something significant occurs. Has the vehicle been jump started with reverse polarity on the cables? Has the battery shorted or some other condition occurred that causes full current to go through the 80 amp fuse either from the battery or from the alternator? Has the diode plate in the alternator shorted? I don't know what all goes through the 80 amp fuse for that vehicle, but most other circuits will be fused at significantly lower amperage. I'd find a good vehicle manual with a schematic of the electrical system and find out the possible sources of such an energy drain. Good luck. If you discover anything that makes more questions feel free to comment on this question thread again. I'll mark this question to watch for further activity.
This is the starter fuse I am talking about. It doesn't blow every time. It might go weeks before it blows again.
The device that the fuse is protecting is causing the fuse to blow. It could be in the conductors that feed the device. Disconnect the device and see if the fuse blows. If it doesn't, then the wiring to the device is good. If the device is a motor load it could be seized bearing that cause the problem. With the rotor stalled the current will go high and blow the fuse. If you know an electrician, see if the device can be meggered to see if the internal wiring has gone to ground and is short circuiting as this will also cause a fuse to blow.
Dead short to ground in either: Parking lights or sockets Tail lights or sockets Dash lights or sockets
Probably have a short in tail light or license plate light. It could also be a bad bulb. If bulb, see sources and related links below for bulb information.
Fuses blow because there is too much current. This is typically caused by a short circuit, but it can also be caused by too much load, perhaps from adding extra lights. It is also possible that corrosion on the fuse connector can cause heat, which would also tend to blow the fuse. Check each of the light assemblies and make sure the bulbs are OK and that the wiring is not crimped, cut, or corroded. Sometimes, a wiring harness may go around the edge of a piece of metal and the insulation gets cut, causing a short circuit. It is also possible that the turn signal switch is bad.
The 1999 Mazda Protege DLC fuse can be found in the fuse box. The DLC fuse will be at the bottom of the first column.
Fuse panel.
The horn fuse is the same as the stop lamp fuse
help
The cruise control fuse for a 2002 Protege is under the dash in the fuse panel. It is a 10 amp fuse and is listed as "meter fuse."
If your heater does not work on your 94 Mazda Protege, check the thermostat. You can also check the heater fuse to ensure it has not blown.
It is important to know where the parts are within a car. The horn relay in a 1993 Mazda Protege is found in the cars fuse box.
Email me for the Fuse diagram dwillman@canada.com
It is run off of the same fuse as the engine computer.
The 2001 Mazda Prot?g? air conditioning fuse can be found in the fuse box. The air conditioning fuse will be in the first column, third from the bottom.
The fuse for the horn should be on the drivers side underneath the dash. There is a diagram on it that shows the horn fuse.
The fuse located inside (driver's side) #13 is responsible for it.