dommatthews Posted September 7, 2015 Report Share Posted September 7, 2015 Hi,My Lupo 1.0 number plate lights dont work so i fitted some new bulbs to see if that was it and nothing.could there be a solution.thanks,Dom Quote Link to comment Share on other sites More sharing options...
Lee62 Posted September 7, 2015 Report Share Posted September 7, 2015 I take it you have checked your fuses Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 9, 2015 Author Report Share Posted September 9, 2015 Hi just checked fuses and there isn't one in there for it and on the card it's number 2 where can I get one of these Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 9, 2015 Author Report Share Posted September 9, 2015 Got a 5 amp fuse and it blew out. Is there something wrong with electrics Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted September 10, 2015 Report Share Posted September 10, 2015 You have a short in that circuit,so you need a meter with a continuity function, start with lamp holders, unhook them then test the supply wires to ground with the contnuity test to see whic one has the short in it. You need the wiring diagram to see where you need to go in the loom.One place to look is the boot hinge, the edge may have worn through the loom there Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 12, 2015 Author Report Share Posted September 12, 2015 My plate is located on the bumper not the boot so wouldn't be anything to do with that, I assume. Is it worth buying a multimeter to check them then? Will power still go through even if there is a dead fuse? Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted September 12, 2015 Report Share Posted September 12, 2015 Without a multi meter it's difficult to fix this kind of fault, Power can't flow through a dead fuse, the fuse blows to stop the wiring from catching fire. I know, someone replaced a 5amp with a 25amp and the wiring loom melted I had to rebuild the whole thing Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 13, 2015 Author Report Share Posted September 13, 2015 Oh crap. So if on payday I grab a multimeter, put a new fuse in and test the wires I should be able to find the problem, hopefully I find it, will really bug me if I don't! Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted September 13, 2015 Report Share Posted September 13, 2015 No don't put a new fuse in, find the fault before you do that.Using the meter to find the problem, test the meter first, set to continuity test, in this mode the meter puts out a small voltage to test for a connection between two points so if you touch the meter probes together you should get a tone from the meter indicating there is a connection.In your problem you have a short ie a connection between two points that should not exist, there are two kinds of wires, feed wires that supply 12v or signals and gound wires that complete the circuit sometimes the car body acts as ground. Somehow your feed wire to you number plate lamps has become connectd to ground when it should not beStart with the numberplate lights, remove the lampholders and the lampsTest 1 is the short in the lamp holders, remove one of the wires from the lampholders, if you have two remove the same wire from both, put the meter probes where the lamp would go, if you get a tone the fault is in the lampholder.Test 2 is the short in the wiring, Connect one probe to the wire you removed, the other to the lampholder where the lamp would go as before probe both of the lamp connections if you get tone on one and not the other then the fault is in the wiring repeat the test on the other lampholder.If the fault is in the wiring then you need to follw the wires back into the car ELSA WIN can guide you as to wire colours to look forthe most likely problem is an insulation failure where the wires pass through a hole in the body shell just a bit difficult to find. 1 Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 18, 2015 Author Report Share Posted September 18, 2015 Just tested everything and there a reading coming up for everything, does this mean it's all okay? Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted September 18, 2015 Report Share Posted September 18, 2015 Probably not, please be specific about the results of the tests and what you actually did. I need tohave another look at the wiring diagram Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 19, 2015 Author Report Share Posted September 19, 2015 I tested bulbs inside the holders, then I removed the housing for the holders from the wires and tested them they were all ok. I then plugged one back in then put the put the probes into the other two(other connection point for housing) and there was a reading. I'm happy to take pictures Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted September 19, 2015 Report Share Posted September 19, 2015 Ok looked at the diagram, looks like this12v ----- E1 light switch ---grey + green ----(A) 5amp fuse (---grey + green--------(e)--Lamp 1 -(f)------brown wire ----- Ground |--------© Lamp 2 -(d)-----brown wire ------- GroundThere are 6 points for testing A,B,c,d,e and fEnsure light switch is turned off, remove the fuse and Lamp 1 and 2, this isolates the wiring, test for contuity between ground ( the brown wire ) and © and (e) if you get both the fault is in the wire between B and e or cTHanks for your post please describe where you get the reading using the above diagram, please note bulbs (lamps) can't be tested in place as to the tester they look like the wiring short we are looking for. Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 21, 2015 Author Report Share Posted September 21, 2015 I will try my best to understand. Ive never done these sort of things before so i appreciate your help! ill get back once ive tried to find it. if not ill get some pics and upload. Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 21, 2015 Author Report Share Posted September 21, 2015 To start with I have tested the lamp holders and everything is reading there - http://imgur.com/hfbpp20Then I tested the brown (ground) of the left side to the ground of the right side this feeded nothing back. Same with the green and grey.- http://imgur.com/fGMs94Ihttp://imgur.com/URLaiKb Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted September 21, 2015 Report Share Posted September 21, 2015 Thanks for the pictures:The second picture shows a plug with brown and grey green cable, if there no comtinuity between those two grey green and brown plug terminals when you tested it we can move on to another test.don't plug in the lampholders, put a fuse in, 5 amp, then turn on the lights and check for 12v dc between the grey green and brown wires in the plug. Be careful checking or you will blow the fuse yourselfIf you get 12v and the fuse doesn't blow then the problem is in the lampholders Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 21, 2015 Author Report Share Posted September 21, 2015 yep when putting probes onto the greeen/grey and brown there is nothing there. so next step would be to put a fuse in (5amp) then check the same again on both sides? is that correct? if so do i need to leave the other one without the lamp holder connected?and also am i checking continuity? thanks Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted September 22, 2015 Report Share Posted September 22, 2015 Disconnect both lampholders so you only have the plugsPut the 5amp fuse in, turn on the lightsCheck for voltage NOT continuity between grey/green and brown in the plugs.If the wiring is OK then you should see 12v on both plugs, if the fuse blows then there is still a fault in the wiring Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 22, 2015 Author Report Share Posted September 22, 2015 Yep! That's good what come up! So the fault is not in the wiring. The fuse did not blow and got a reading Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted September 22, 2015 Report Share Posted September 22, 2015 Well done that's really good so the fault is in one or both lampholders, from your picture it looks like self tapping screws holding them together, time to take them apart.Remove the screws, that should remove the cover and expose the lamp ( bulb ) remove the lamp and repeat the contunity test on both lampholders.If they both test out OK as no continuity between the pins where the plug connects, replace both the lampsIf there is continuity with the lamps removed then replace the affected lampholder Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 22, 2015 Author Report Share Posted September 22, 2015 So I have removed each lamp from the lamp holder. http://imgur.com/j2LdhLvAm I then wanting to put the thing on the left back on then test continuity from the the two prongs inside the connector? Quote Link to comment Share on other sites More sharing options...
dommatthews Posted September 22, 2015 Author Report Share Posted September 22, 2015 DONE! There was an LED in one bulb where there was no continuity going through, where as the other light had a standerd bulb in and there was a reading! I then put another standerd one in and boom there was a reading! Put them back into the car popped the fuse is and turned on the lights. No blow. I checked the lights and was so happy! Something so stupid was really bugging me! I really appreciate your help Carrera! Wouldn't have been able to find that if it was me trying. Thanks so much! Quote Link to comment Share on other sites More sharing options...
carrera-gt Posted September 22, 2015 Report Share Posted September 22, 2015 Really glad you fixed it, happy to help Quote Link to comment Share on other sites More sharing options...
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