Handbook 652 Body Electrical Diagnosis Splice Points Within wire harnesses, splices distribute power and ground to the various circuits. An octagon with an ID number represents a splice. The ID number appears in the cross reference to the Electrical Wiring Routing section at the end of the system circuit diagram. B, E, and I in the ID number refer to the splice ’ s location in the body, engine, or instrument panel. NOTE When making checks on the vehicle, use connectors and harness-to-harness connectors as your test points of “ first choice. ” Splices tend to be difficult to find in the harness because they are wrapped in tape or plastic conduit.
Also, the location diagram given in the Electrical Wiring Routing section gives you only a general idea of where the splice is located. Inspect the individual splice points only if the checks at the connectors point to the splice as the problem. 86 Technical Training