hi all new on here....just rebiulding my rs when i came to refit my alternator i cannot seem to find where my blue charging wire goes to it has been apart for a while lol .... it is the bolt on type not the plug in if this helps i connected the brown charging wires ok but some one has changed the connector on the blue wire to a large ring terminal...it is quite long so looks like it can only go in one place....when connected thier it does charge but batt light stays on....any ideas peeps can get some pics up if this helps. thanks

 

Look on the alternator for the IND marking on the terminal to use, the wire when disconnected with ignition on should be live, and when connected to the correct terminal on the alternator, with engine stopped ignition on should illuminate the bulb, so just check for a earth point on the alt, this will change to live as it starts to charge, the blue wire that goes to the instruments warning bulb is merely given a live one side when the ignition is turned on, the other side of the bulb is the blue wire going to the alt to a terminal that is earth(ground) when stopped but when running changes to live and so puts the bulb out as two lives are no good.
tabetha

 

thanks very much....i found the w mark on the alt and know its not that. and the b+ is also connected correctly....i tested the blue wire and found batt volt and tested the alt and found it was earth, when blue wire connected to alternator with ign on to acc was live... and when running charging at 13.90 with no warning light. ta very much.

 

No probs matey, just so you know the W terminal is a single tap off of the alternator(it has three) that is used on diesels for tacho's mainly, though some others use it for electric chokes, it gives out around 8 volts.
tabetha