Some vehicles may have load drawing solenoids that become defective causing overload on the current carrying wire causing it to over heat and burn. Another cause is bad connections on terminals. Some wires carry heavy loads of current, therefore, causing a hot spot at that bad connection causing the wire to over heat and burn. Still other causes could be bad alternators, heater blower motors, radiator cooling fans, etc... All these are load drawing components and should be looked after.
The way to plug in the harness depends on the type of harness that you have. Some are designed to unplug a connector then insert the harness inline with the wiring. Some require a special connector that clamps on the side of the wires, while others require wires to be cut and spliced together.
Possible blown fuse. Possible that the wiring harness under the dashboard has come loose.
Engine wiring harness is primarily used to control fuel and ignition timing. Switches, sensors and actuators are also some of the other components that are related to vehicle engine control.
There are six steps on how to take off the engine wiring harness on a 91 Toyota Cressida. Some of the step-by-step instructions are disconnect and remove the battery, remove the old harness, and use a small screwdriver to remove the clips and retainers that hold the harness in place.
Yes I just did it with mine. Wiring harness has different plugs for injectors so some harness switching is required.
some emc squash the wiring harness and end up breaking wires which earth out on the body and cause shorting out which causes the blowing of fuses
With some modifications anything could happen but is better if you get the dash wiring for the 79 firebird.
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Under the middle of the rear bumper between the spare tire and the bumper there will be some wiring zip tied to the frame. Cut the zip tie and pull down the wiring. Depending on what type of harness you are using there may be some wires that you will not use. It is also suggested that you disconnect the battery before doing this.
sounds like a short. if all or some speakers do it, it is probably in the radio, or the wiring harness. if only one speaker does it, it is the speaker or the wiring to that speaker.
I guess it depends upon which wiring harness. I've spliced in a "patch" on a few wires on the harness from the front of my '91 Sierra to the gas tank (had some pinched wires). Wasn't terribly hard to do. I now have a wire or 2 on the harness from the engine, haven't tackled that yet. It's probably best left to a mechanic.
It sounds like something in the wiring harness or it may be some naked wires touching and shorting out. Look for burn section of wiring around the battery or fuse area. It sounds like you have burned out a fusible link. This can be replaced by some one with a little wiring knowledge.