martyn wright Posted August 4 Report Share Posted August 4 Hi! On switching on the ignition, I have found that the Fuel Gauge is not working! I have fitted a New Tank Sensor and checked the Wiring from the Tank to the Gauge! On checking the Gauge I found that there is a (Black and Green) and a (Green) coming of the connections! Which in the Manual is Correct? On a Large coloured Diagram which I now believe is for the 2ltr Mk2, which I had purchased of Ebay a few years ago! shows a Black Earth wire attached to the U shaped Gauge holder? (my Temp Gauge has one of these). Do I need one? as well as the one on the rear of the tank! or is the Black and Green one correct?? Link to comment Share on other sites More sharing options...
johny Posted August 4 Report Share Posted August 4 Well its the bulb that needs the gauge to be earthed to work. Is your 10v supply regulator working ok as this supplies the both the fuel and temperature gauges via the green wire (think its actually green/light green) and black/green goes off to the sender - doesnt matter which way round these are connected on the gauges as its just powering heating elements in them. The black wire on the tank completes the gauge circuit after having gone through the sender variable resistance... Link to comment Share on other sites More sharing options...
martyn wright Posted August 4 Author Report Share Posted August 4 (edited) Hi Johny! As mine is a vitesse 1600/6 1966 model, it doesn't have a Regulator. Mk1 mk2 2lrs do have! All I have to do is fit a black earth? I also have a spare gauge so will check those! Cheers Martyn Edited August 4 by martyn wright Link to comment Share on other sites More sharing options...
johny Posted August 4 Report Share Posted August 4 Ahh so your gauge needles jump around when you turn on the ignition? I assume you got the special sender to match them? The manual shows an earth connected to one of the gauge terminals but that cant be right so its the casing that must be earth but for the gauge to work the important one is the earth on the sender... Link to comment Share on other sites More sharing options...
martyn wright Posted August 4 Author Report Share Posted August 4 Yep! Mine has the old 5 screw connecting ring sender! There is absolutely no life in the clock whatsoever! The Temp gauge has a earth, but there nothing on the Feul gauge? Link to comment Share on other sites More sharing options...
johny Posted August 4 Report Share Posted August 4 They sometimes get misplace and connected elsewhere but the gauge bulb will definitely need a return. I think with your magnetic type of gauge Im right in saying that it still doesnt matter which way round green and black wires are connected - no indication on the terminals is there? Link to comment Share on other sites More sharing options...
johny Posted August 4 Report Share Posted August 4 So youve got 12v on the green/black when disconnected at sender? Link to comment Share on other sites More sharing options...
martyn wright Posted August 4 Author Report Share Posted August 4 Don't know yet! Can't work on it anymore today! Will test it tomorrow again! Thanks have a good day! Link to comment Share on other sites More sharing options...
martyn wright Posted August 8 Author Report Share Posted August 8 Found the wiring all okay! Took old gauge out and tried a New old stock gauge which I purchased as a back up 2 weeks ago! And it is now working lol 😆 Thanks everyone for your input! Link to comment Share on other sites More sharing options...
martyn wright Posted August 19 Author Report Share Posted August 19 Update! It has stopped working!! Just tested the gauge and its the Tank Sender unit that's kaput! It's the 5 screw one on the 1600/6 and there doesn't appear to be many around? Ebay range up to £60ish, Canley said they didn't do them anymore, but had a look for me anyway! They managed to source one and it cost me £53.80. 3 day delivery! Link to comment Share on other sites More sharing options...
johny Posted August 19 Report Share Posted August 19 Ouch so thats the second tank sender? It has been an expensive job😭 Cant claim under guarantee for the first one? Link to comment Share on other sites More sharing options...
martyn wright Posted August 19 Author Report Share Posted August 19 Update! It has stopped working!! Just tested the gauge and its the Tank Sender unit that's kaput! It's the 5 screw one on the 1600/6 and there doesn't appear to be many around? Ebay range up to £60ish, Canley said they didn't do them anymore, but had a look for me anyway! They managed to source one and it cost me £53.80. 3 day delivery! Link to comment Share on other sites More sharing options...
martyn wright Posted August 19 Author Report Share Posted August 19 Knowing my luck, I've just purchased this one and when I take the old one out, it could have been put in upside down?? 😅 Link to comment Share on other sites More sharing options...
johny Posted August 19 Report Share Posted August 19 I just hope there not something wrong that that will make the second sender fail as well! Link to comment Share on other sites More sharing options...
Peter Truman Posted August 19 Report Share Posted August 19 (edited) If its 5 screw I assume you can't put it in upside down. I've just checked my tank and it's 6 screw so it can be inverted! A long story my Vitesse tank I loaned to someone who sold his car with my GOOD tank in it, so I had to get replacement I found locally here in Oz a NEW small Herald tank, a locally made CKD item I assume. Being an early Herald item it was a 6 screw, whereas my original Mk2 Vitesse sender was a seal ring type, I was able to drill the 6 holes in the original sealer ring type sender's backing plate and made an extra annulus flange on the outside of the senders backplate to clamp it all together. So rather than an original 6 screw sender unit you could in future use a sealing ring type and modify it YES I do have a short range fuel tank so a poly aux tank is carried in the boot!!! As needs must! Edited August 19 by Peter Truman Photo Attached Link to comment Share on other sites More sharing options...
johny Posted August 20 Report Share Posted August 20 Ive never seen a 5 hole sender on a Triumph is it standard? I think the gauges are moving iron type so have to have the matching sender which will be FT3331 series. Then I see you were looking for one of these back in 2020 Martyn and was that for the same car😨 Link to comment Share on other sites More sharing options...
martyn wright Posted August 20 Author Report Share Posted August 20 (edited) Hi Johny! Sorry All! For some reason i have said it's a 5 screw in fact its 6 Screw Sender lol !From the information I had, they where only fitted on the 1600/6 out of the Vitesse range? Early Heralds also had them! Edited August 20 by martyn wright Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 20 Report Share Posted August 20 and if you have fitted a bayonet ring tank it can take a 6 hole sender if you trim around the holes to make it insert did this on our Vit 6 years ago . you cant mix and math the two different senders , wildly differing resistances . Pete Link to comment Share on other sites More sharing options...
martyn wright Posted August 20 Author Report Share Posted August 20 (edited) Hi Peter! When I drain the tank and remove the Sender! I am hoping the unit is repairable. A friend can fix certain problems on these? Edited August 20 by martyn wright Link to comment Share on other sites More sharing options...
martyn wright Posted August 20 Author Report Share Posted August 20 Thanks for the info Pete! Hope you are well! Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 20 Report Share Posted August 20 Ha had a bug this week , needs a brass bush !!! not covid but a nasty ecoli type upset , early heralds also had moving iron gauges getting senders is becoming a bit rare temp gauges use a specific 121997 sender again you cant mix and match years back we had a member plagued with supposed overheating even to change the engine it had a voltage stabilised sender in a moving iron system but the old gauges can work well for years if ever contemplating a change then go for a voltage stabiliser and new gauges and senders to match Pete Link to comment Share on other sites More sharing options...
johny Posted August 20 Report Share Posted August 20 14 minutes ago, martyn wright said: Hi Peter! When I drain the tank and remove the Sender! I am hoping the unit is repairable. A friend can fix certain problems on these? But youve got another new replacement from Canley as well right? Be interesting to see whats caused the failure anyway... Link to comment Share on other sites More sharing options...
martyn wright Posted August 20 Author Report Share Posted August 20 Yes! the old one was New and fitted some 3 years ago but never used as such? Until she was started last Sept/Oct! Link to comment Share on other sites More sharing options...
johny Posted August 20 Report Share Posted August 20 Hope it can be fixed as especially useful for you to have a spare! Pretty simple and not a lot to go wrong really although the resistance wire inside can break through corrosion/wear but still fixable with patience... Link to comment Share on other sites More sharing options...
martyn wright Posted August 20 Author Report Share Posted August 20 (edited) That's it the resistance wire went on my previous one! Only found out later it can be fixed? Sorry! Johny, my illness has affected my memory short term mainly lol 😆 cos they're getting rare I was hoping to fix the old one and keep the new one as spare! Yep! Edited August 20 by martyn wright 1 Link to comment Share on other sites More sharing options...
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