Actually, you don’t need a diagnostic code reader. If you’re wondering how a pinout of the OBD1 connector looks like in most cars, here is an image.īelow is what the different letters in the image mean: When connecting your wires, ensure to be very careful as a slight mistake can hurt your car’s electrical system and control units, which are pretty costly. Related article: Follow these steps to pass OBD ii emissions test What’s more, the standard, which includes power, ground, and a diagnostic pin, is the same in most car models. However, not all pins are used in most vehicle models. The OBD1 connector typically comes with 12 pins. Besides, the connector is also typically black and comes with 12 pins on it. The connector usually has a black plastic cover, which you have to remove before accessing it. Most GM vehicles, such as Cadillac, Buick, Chevy, Pontiac, GMC, and Oldsmobile, have the OBD1 connector situated below the steering wheel, under the dash. OBD1 connector locationįirst and foremost, you should know where the OBD port is located. This will help you save the cost of visiting a mechanic to troubleshoot your car.
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