B reg 90 Posted January 22, 2012 Share Posted January 22, 2012 Hi, I have a random wire that is not connected to anything at the front of my 300 tdi engine. Just done the timing belt and replaced the rad . At the end of the job I noticed it, but i didn't disconnect it... so where the f**k should it go and what does it do? Engine starts and stops as it should. Ta, Adrian Quote Link to comment Share on other sites More sharing options...
Landy-Novice Posted January 22, 2012 Share Posted January 22, 2012 whats the other end connected to? looks like an earth? Quote Link to comment Share on other sites More sharing options...
B reg 90 Posted January 22, 2012 Author Share Posted January 22, 2012 It disappears into the wiring harness, d So difficult to tell.... Quote Link to comment Share on other sites More sharing options...
discomikey Posted January 23, 2012 Share Posted January 23, 2012 get a multimeter, and check the continuity between that terminal and the chassis. its more than likely going to be an earth, and the multimeter will show very little resistiance (and probably beep) if it is an earth, i would connect it to the block even if it wasnt before as you can never have too many earths (might be fine now, but if another earth goes bad it might be the only thing keeping the engine going?) Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted January 23, 2012 Share Posted January 23, 2012 Edit:Removed comment as irrelevant, I failed to notice it's in the discovery forum.... doh! Quote Link to comment Share on other sites More sharing options...
sierrafery Posted January 23, 2012 Share Posted January 23, 2012 As mr. discomikey said...and if there is no closed circuit between that wire and earth connect it to the closest earth rail Quote Link to comment Share on other sites More sharing options...
discomikey Posted January 23, 2012 Share Posted January 23, 2012 im interested as to what you were going to say now, even though it may be in the wrong forum it may still be helpfu, you know how mixed and matched land rover parts can be. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted January 23, 2012 Share Posted January 23, 2012 Just that I checked the 300 tdi defender engine loom on mine and there is no black wire at that point in the loom. Of course that doesn't mean a disco engine loom doesn't have one. Hence removing the comment after my Doh moment. The wire looks long enough that it was going to the alternator (ring terminal also might hint at alternator) but there is no black wire on any ring terminals on alternator, also checked the wiring diagrams and couldn't see one. So maybe it's a later addition, the crimp connector would also support this ..... so depending on previous owners 'style' it might not be an earth ..... maybe it was on the 'W' terminal of the alternator? Does the tacho still work? Quote Link to comment Share on other sites More sharing options...
B reg 90 Posted January 23, 2012 Author Share Posted January 23, 2012 Rev counter still works. I will get a multi meter on it tonight. Quote Link to comment Share on other sites More sharing options...
sierrafery Posted January 23, 2012 Share Posted January 23, 2012 In the eventuality that there's no closed circuit between this wire and earth then connect it to the closest earth rail... as it looks it could be an earth for something at the other side of the harness. Quote Link to comment Share on other sites More sharing options...
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