Checking Aftermarket Accessories |
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SIR circuits, all such circuits are indicated on circuit diagrams with the SIR symbol. |
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OBD II circuits, all such circuits are indicated on circuit diagrams with the OBD II symbol. |
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Power feeds connected to points other than the battery |
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Antenna location |
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Transceiver wiring located too close to vehicle electronic modules or wiring |
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Poor shielding or poor connectors on antenna feed line |
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Check for recent service bulletins detailing installation guidelines for aftermarket accessories. |