JAEGER universal tester, 7-/13-pin, for trailers
The JAEGER universal tester checks the electrics on 7-pin and 13-pin trailer sockets and plugs. LED indicators show which light function is working and where a fault lies.
For testing on the towing vehicle, the device is plugged into the socket and each light function switched on in turn. This allows a fault to be narrowed down before the trailer is coupled. Two items are listed under the same name.
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