Shadow1971 Posted March 5, 2017 Share Posted March 5, 2017 Hi you clever lot. Again my car ceases to astound me. It has had a new alternator then the brake light switch went and now the dif lock light comes on every now and then. It is of the age (2000 w reg) that had them fitted well part anyway. Could I have a Wiring fault or issue somewhere. It is probably a common thing. Looking in the Haynes manual the f25 fuse via a resistor goes to the diff lock switch. My question is , is the diff lock coming in and out willy nilly a wiring fault or what. Any thoughts would be appreciated Quote Link to comment Share on other sites More sharing options...
sierrafery Posted March 6, 2017 Share Posted March 6, 2017 If the diff lock warning comes on when you hit the brakes then fuse F25 is blown that's why that setup with the resistor is made there to warn you that the brake lights are not working F25 being blown, if it comes on randomly while driving most probably the switch on the transfer box is gone cos it's poor design and the terminals used to split, it's about the one pointred with arrow, part nr PRC2911 Quote Link to comment Share on other sites More sharing options...
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