Many people love to work on their car themselves and this is not an issue as long as you are aware of what the consequences are if the engine repairs does not go well. If it is something simple like changing the oil or the batteries then you could safely do it almost without any hitches as long as you know what you are doing. However, there are some repair jobs that are best left for the pros to handle. ‘
Paint and Bodywork
This repair job is messy, time consuming and you get exposed to a lot of fumes which can be bad for your health. It is so easy to end up with a totally crappy paint job complete with wet sanding gouges and bubbles everywhere. Moreover, if you do not have enough knowledge about painting cars then it is highly likely you’ll end up with a car that has insufficient clear coats and overspray problems.
Computer Box Repairs
According to complete repairs experts, you need to leave the computer box troubleshooting to a certified ASE master technician rather than try interpreting the problem yourself. Unless you have good knowledge about shift points and air/fuel ratios just allow a certified tuner to do what he has been trained to do rather than you doing amateur work on something that could really mess up your car.
The reason why a lot of folks want to do this themselves because the labor costs something between two to three hundred dollars. Sure, you can carve one out for next to nothing at a junkyard of your choice but by the time you know about the other requirements such as adhesives, new clips and window trim pieces, the quote you got originally would not look so expensive at all.
There are hundreds of yards of electrical wiring in a car and that small wire you saw protruding may just be the tip of the iceberg. Unless you are an electrician yourself, stay away from electrical wiring if you do not want to accidentally short circuit your car or worse cause a fire as a result.