You have no items in your shopping cart.
Decoding wiring diagram in automobiles
This entry was posted on July 7, 2018.
Wiring / circuit diagrams are much similar to maps. Roads in a road map lead the user to some predefined destinations. Same is the case for wiring diagram; Wiring/circuit diagram leads the reader to identify the power source, Loads on the circuit and all the intermediate active/passive components provided to control the loads.
3 most important things to remember while trying to interpret wiring diagrams.
Next comes controlling loads of the circuit along with safety and auxiliary parts in circuit. (Relays, fuses, ecus, solenoids, Dash switches, resistors, capacitors etc. )
Initially using analogies could help beginners to learn and reach from moderate to expertise level. But first the user needs to be well aware about different electronics and electrical symbols.
Electrical wiring diagrams are built using some basic symbols for the components used in making the circuit. So a quick check/understanding of this symbols, is must to start decoding the electrical wiring diagrams of automobiles. One such basic list of symbols is given below.
Just to begin with ABC’s of reading a circuit diagram, let us begin with one of the simplest circuits – A fog lamp circuit.
The fog lamp circuit above shows
Both these circuits are interconnected by a Relay switch in between. When Flip switch is actuated it turns the relay switch on and thus completes the yellow circuit; to switch on the fog lights. Relay acts as an electronic switch for the circuit.
- Power source
- Load
- Ground Return.
Next comes controlling loads of the circuit along with safety and auxiliary parts in circuit. (Relays, fuses, ecus, solenoids, Dash switches, resistors, capacitors etc. )
Initially using analogies could help beginners to learn and reach from moderate to expertise level. But first the user needs to be well aware about different electronics and electrical symbols.
Electrical wiring diagrams are built using some basic symbols for the components used in making the circuit. So a quick check/understanding of this symbols, is must to start decoding the electrical wiring diagrams of automobiles. One such basic list of symbols is given below.
Just to begin with ABC’s of reading a circuit diagram, let us begin with one of the simplest circuits – A fog lamp circuit.
The fog lamp circuit above shows
- Battery - (Power Source)
- Relay switch
- Fog lamps - (Load)
- Switch
- Fuse
- Body Ground and wirings.
- Flip-switch circuit - Blue colored path
- Fog lamps circuit. – Yellow colored path
Both these circuits are interconnected by a Relay switch in between. When Flip switch is actuated it turns the relay switch on and thus completes the yellow circuit; to switch on the fog lights. Relay acts as an electronic switch for the circuit. 
Some really nice and useful info on this website, likewise I believe the design has excellent features.
Thanks for your info. If installing a dimmer switch, you say the wire from the switch to the lights will be white. Is this a third wire or does it replace the black wire? Thanks.
Thank you for the good writeup. It in fact was a amusement account it.Look advanced to far added agreeable from you!However, how can we communicate?
Greetings! Very helpful advice in this particular article!It is the little changes that will make the biggest changes.Thanks for sharing!
I?m impressed, I must say. Really rarely do I encounter a blog that?s both educative and entertaining, and let me tell you, you have hit the nail on the head. Your idea is outstanding; the issue is something that not enough people are speaking intelligently about. I am very happy that I stumbled across this in my search for something relating to this.
This i like. Thanks!