changing speedo please could some one help me

[charlie_morris_minor]

your response certainly leaves me speechless

[bmcecosse]

Ahh - just noticed your rude reply Joe - I find it amazing that after asking for help, and having been given guidance in all good faith, someone could come back so rudely! However - since you have challenged me - can we have some pictures of this 'voltage stabilizer' at the tank please? And - how does it work - has a power wire been run all the way to the tank to run the 'voltage stabilizer' ? Always keen to learn - so here's your chance to teach me (and probably some others) how this works ! As far as I know, no other Minor has a 'voltage stabilizer' at the fuel tank - I think your car must be unique!

[joeone62]

Well its back to work once again, all did not function as I wished.My fuel gauge was indicating fuel in the tank, but in the end it left me stuck in the road without fuel. So I think that my conclusion should be that I have to change the Petrol Tank Sender Unit (Float), for the one with a flat top, without a stabaliser, and wireing the speedo in the original way making use of the stabaliser behind it, lets hope all will go for the better

[bmcecosse]

We did try to explain it all to you earlier on.............

[charlie_morris_minor]

once you have taken the old one out do you want to post a photo of it on this thread so we can see the stabiliser that you are saying that it has..

[joeone62]

Well finally today I changed my Petrol Tank Sender Unit and therefor all my problems should be resolved. As you can see the sender on the left has attached to it a 'voltage stabilizer', but the one on the rights does not. Thats because the first one is to be used witha bronze faced speedo (that does not have a 'voltage stabilizer' on the rear, and the second one is to be used witha black faced speedo (that does have a 'voltage stabilizer' on the rear. Now I just have to change the wireing on the speedo and all should be fine.[frame][/frame]

[bmcecosse]

That's not a 'voltage stabiliser'! That's just a rheostat - a variable resistance - and both units have that - but each is designed to be matched to the correct gauge in the speedo. The early cars had 'fast' gauges (bronze) where the needle swings around all the time - later cars have slow gauges (black) - where the gauge is a 'hot wire' instrument - and the needle moves according to how the rheostat in the tank regulates the flow of current. This type of gauge - since very sensitive to voltage - is operated through a 'voltage stabiliser' which is mounted on the rear of the speedo - and feeds a pulsed voltage to the gauge and rheostat circuit - which approximates to 10 volts. I did try to explain all this earlier in the thread, but you were adamant you knew better - I now appreciate there could be a language barrier. Bon chance!

[joeone62]

Well however thanks to all of you, to finish this topic, I have rewired my speedo, if by chance somebody notices something wrong with the wireing please let me know, it will be very much appreciated[frame][/frame]

[bmcecosse]

Hard to see the colours completely clearly - but I don't think that green wire should be on the fuel gauge - there should be 3 x green wires all together on the one terminal on the voltage stabiliser.

[charlie_morris_minor]

a bit of clarification just in case..

you currently have two green wires going to your petrol gauge, you only need the short one from the stabiliser..

[bmcecosse]

Which is supposed to be light green - but isn't showing up in the pic any different to the others.

[joeone62]

Infact just checked out the wiring diagram and noticed that mistake, as soon as I get back from my vacation in Italy and return to Paris I'll switch those wires and all should be working as normal thanks.

[bmcecosse]

IF it is now the correct type of fuel gauge (ie hot wire) - and a matching sender in the tank - then YES!

[joeone62]

Well that should be the end of that, changed the wiring and all is functioning as should be thanks to all

[bmcecosse]

Thank the Lord........