nightrider Posted January 15, 2013 Share Posted January 15, 2013 Hi can anyone help me i have a p-reg 300 tdi auto disco the auto box went faulty so i have converted it to manual, does anyone know how to bypass the inhibitor switch which stops u starting it in gear. There are 4 wires on the plug which come off the auto box 2 were green with different couloured traces in them and 2 blacks with differnt colour trace in them. i think these are the wires for it but not sure can anyone help regards paul Quote Link to comment Share on other sites More sharing options...
teabag Posted January 15, 2013 Share Posted January 15, 2013 Some wires are for reversing light switch, the black/yellow from the starter relay is earthed via the alarm ecu on the black/green according to the diagram in the Haynes manual, see what happens when they are connected together. Quote Link to comment Share on other sites More sharing options...
Boydie Posted January 16, 2013 Share Posted January 16, 2013 yeppers, two wires are the reverse light, bridge them out individually to find which two switch the light and connect them to the reverse light switch on the manual, the other two are the inhibitor, they will be normally open to prevent the starter motor from being initiated, they close if Park or Neutral is engaged these two you bridge permanently. Quote Link to comment Share on other sites More sharing options...
Stevie D Posted January 16, 2013 Share Posted January 16, 2013 Quote Link to comment Share on other sites More sharing options...
Boydie Posted January 18, 2013 Share Posted January 18, 2013 BTW, I bridged the inhibitor lock-out switch on mine some time ago, I got fed up with the switch occassionally sticking and besides I'm a big boy now and I think I can remember to leave the gear lever in Park - after all do manual gearbox drivers have lock-out switches to make sure they only start their engines in neutral? Quote Link to comment Share on other sites More sharing options...
teabag Posted January 18, 2013 Share Posted January 18, 2013 Can you start a manual with the key when it's in gear , I've never been able to. My companies Honda Accord has to be in park before I can remove the ignition key. Quote Link to comment Share on other sites More sharing options...
nightrider Posted January 18, 2013 Author Share Posted January 18, 2013 thanks for the help job done now the 2 green wires are for the reverse ligts, the black and yellow is the inhibitor switch wire you put that to earth and the black wire is for the transmission over heat light on dash which you just leave. Quote Link to comment Share on other sites More sharing options...
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