Important! : identify this dangling plug in my engine bay?!?

1. user_35014 Established Member Joined: Jun 2009 Helensburgh Posts: 1206 Cammed Ph2 VTS

   #1 17th November 2009, 15:29

   what the fizzle is this:
   
   
   
   connected to the alternator. car seems to run ok, i get 14.05 volts across the battery at idle.
   
   
2. Sparco_Tom Saxperience Addict Joined: Jan 2007 Aylesbury, Bucks Posts: 12836 Yeaaahh Fiesta

   #2 17th November 2009, 15:31

   goes on the front on the block behind manifold iirc
3. user_35014 Established Member Joined: Jun 2009 Helensburgh Posts: 1206 Cammed Ph2 VTS

   #3 17th November 2009, 15:45

   That ones already connected mate, that looks like an earth?
   
   Cant find the socket for the plug in the vicinity of the alternator.
4. peter_10sax Infrequent Poster Joined: Jul 2006 cambridge Posts: 182 1997 gunmetal vtr track slag

   #4 17th November 2009, 17:47

   oil pressure switch i think???
5. user_35014 Established Member Joined: Jun 2009 Helensburgh Posts: 1206 Cammed Ph2 VTS

   #5 17th November 2009, 18:52

   Not connected to the alternator mate surely.
6. foster5_13 Newbie Joined: Jul 2007 gateshead Posts: 29 106xn, mk 1 vtr, mk 2 vtr, mk 2 vts

   #6 17th November 2009, 21:08

   if it clips in to the front of the altenator. it is the feed for your battery light on ya dash m8
7. b-christie Regular Poster Joined: Jan 2008 dundee (scotland) Posts: 466 saxo vtr/vts engine

   #7 17th November 2009, 21:26

   looks similar to front fog light connector do they work ?
8. smnwllms Infrequent Poster Joined: Oct 2009 Frinton on Sea, Nr Colchester Posts: 240 2000 Posi VTS

   #8 17th November 2009, 23:19

   You sure it comes from the Alternator? Looks a bit like it comes from the plastic tubing?
   I'll have a look in my bay and get back to you.
9. foster5_13 Newbie Joined: Jul 2007 gateshead Posts: 29 106xn, mk 1 vtr, mk 2 vtr, mk 2 vts

   #9 18th November 2009, 08:20

   its defo the feed 2 ya battery light on ya dash cause mine melted in2 place nd had n get a new 1
10. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

    #10 18th November 2009, 08:26

    Oil level sensor on the front of the block.
    
    The alternator looks to have two ring terminals on it. One to feed the battery, the other for the dash warning light.
11. user_35014 Established Member Joined: Jun 2009 Helensburgh Posts: 1206 Cammed Ph2 VTS

    #11 18th November 2009, 08:33

    But if you look at the top of the picture, theres a wire that goes out of the alternator over the top of the oil filter (the white thing) and this wire is connected to the front of the block.
    
    I suspect that it could be for the battery light, bit worried that it will just turn on when i plug it in! where is the other end of it then?
12. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

    #12 18th November 2009, 09:18

    If it's a single wire then it's the oil pressure sensor with a little spade connector on it.
    
    As this clip has two wires it goes to the oil level sensor about 10mm above the oil filter, I'll try and find a pic.
13. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

    #13 18th November 2009, 09:21

    
14. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

    #14 18th November 2009, 09:22

    You can just see both sensors - I think the plug goes on the sensor nearest the oil filter

    1 user thanked this post: user_35014
15. user_35014 Established Member Joined: Jun 2009 Helensburgh Posts: 1206 Cammed Ph2 VTS

    #15 18th November 2009, 14:39

    Mate - your awesome. whats the point of it? do i get a warning on low oil level?
16. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

    #16 18th November 2009, 15:23

    yeh, the oil level light will flash for 10 seconds when you start the car i fits low
17. giannis450 Newbie Joined: Mar 2017 Posts: 1

    #17 4th March 2017, 12:10

    Hello,
    
    I have a saxo 1.1 60ps of year 1998. As far as I can see, I have also a green plug unused. It is exactly next to the alternator, just as pjw shows in his picture above. I can only locate one oil sensor (right above the oil filter), not two like raunchz mentions. Has anybody any idea what it might be??
    The main problem is that I have a dim battery light on my dash for over a year now (yes it is constantly dim, even on first click before I crank on the engine). I have checked the voltage, replaced the battery, replaced the battery termninals and so on. I thought that the previous owner might have fitted a different kind of alternator or a cable has gotten loose. When I saw the green plug unused I thought that this may be the problem of constant dim battery light on dash.