ALDL (GM OBD1) Cable with 12 pin Connector.This system was only vaguely standardized and suffered from the fact that specifications for the communications link varied from one model to In the event you need to build a custom cable, use the following pin outs for the RJ45 connector: 1=A(gnd) 2=B(diag) 3=E/M(data) This is the 86-94 original ALDL connector: On CABL1: pin A is connected to RJ45 pin 1 pin B is connected to RJ45 pin 2 pin E and pin M are connected to RJ45 pin 3 pin G is connected to RJ45 pin 4 other pins are not connecte Aldl Wiring Diagram - Wiring Diagram Network This cable is intended to be used with cars and trucks using gm ecmpcms originally equipped with 12 pin aldl connectors in the 1982 to 1995 era. If you have a old mid 1980's carbureted car with the 12 pin ALDL, you have a 12V ALDL system that works off pin D and you will need to build your own cable, see this WinALDL page Aldl to usb schematic. It was previously called Assembly Line Communications Link or ALCL On the standard 12 pin OBDI connector, this will usually be pin M on the 8192 baud rate cars, or pin E on 160 baud rate US domestic cars. The majority of the wires in the stock harness are not needed in a retrofit application ALDL 12 pins connector - front view Assembly Line Diagnostic Link or ALDL is a proprietary on-board diagnostics system developed by General Motors before the standardization of OBD-2. Need Aldl Pinout And Wire Colors Third Generation F Body. Pinout of obd vag vehicle diagnostic interface and layout of 16 pin car obd2 special connectorobd stands for on board diagnostics and defines the modern fuel managed vehicles electronic interface system.
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