OBD Diagnostics
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Some J1708 vehicles use the older style GM ALDL connector. This adapter converts the ALDL J1708 connection to a standard J1708 6-pin connector.
Wiring Connections
| ALDL |
Signal |
6-pin |
9-pin |
| A |
Ground |
E |
A |
| H |
Battery |
C |
B |
| J |
J1708+ |
A |
F |
| K |
J1708- |
B |
G |
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