Fuses and circuit protections are normally found in a cars power distribution box. Relays and main power distribution are also found there.
The vehicle's fuse panel normally receives power from there and further divides the circuits.
Grounds are normally found at the kick panel, the door sill, floor or around the component at its harness.
A technician can verify and define the concern and isolate the general loss of power or ground in a half hour or less. Individual component testing can take the same amount in addition.
He/she uses a schematic available in a service manual set or from an automotive database.
It is customary to begin at the inoperative component and work back to its source.
A test light is 4 bucks at the hardware or parts store.
a cheapo volt meter is about the same.
It can test simple needs for diagnosis.
Electrical issues in automobiles are found, usually, to be grounds, connections, circuit protection, or failed parts designed to fail. unusual finds may include water entry into the passenger compartment. It condenses or directly enters components.
If you have not done the basics, it is recommended to request help at your parts store, or get the manual free at your public library.
Guess fixing without simple things checked first, and a circuit map to use costs exponentially more time and money.
Do it smarter or hire it done, that's the smart money.
Patience is the greatest gift a car technician possesses.
Experience is priceless.
A half hour at a real shop is about $40. When diagnosing a simple circuit. You can ask questions or stop them at any point you choose.
Before learning what he needs to know, a tech is stifled by policy, or things they know that aren't so.
His experience can prevail. Let him/her find the cause.
Most of the cars he checks don't even have clean and tight connections at the battery, a good battery, or they have been affected by water entry, vibration, or previous work and substandard repair attempts.
The socket the bulb goes into would be where to start testing for presence of power and ground. Then the loads pull current through the flasher, making it create a momentary open. Electronic flasher testing can also be accomplished simply with a guided diagnostic from a decent service manual, by a technician, if you have trouble.
The second day, you would wish you had consulted an experienced technician the first day. He/she may go right to it, If its already a basket case though, its time and material..