KKCortina 2 Posted April 16, 2018 Guys, Gen.light (red) on dash of my Mk2 1600 de luxe glows normal when ignition switched ON......however when engine starts (normal - no issues) the light refuses to go out fully 100% at fast idle ...and retains about 20% of it's intensity whilst driving at 50-60mph! Tried changing the Dynamo for a known working one.....and also fitted a different Voltage Regulator box (RB340).... checked all wires for connection/tightness......all to no avail.. Could re-polarising dynamo be the answer? Polarising Method - for a Neg.Earth car do you run a wire from the + pole on the battery and rub/dab it against small terminal at rear of dynamo (with wire disconnected, I assume)....... or is it the opposite (run wire from Neg.pole and rub/dab against small dynamo terminal ) Also does the engine need to be running/ticking over for this re-polarising procedure? Quote Share this post Link to post Share on other sites
nogE 91 Posted April 18, 2018 Blimey...it's been a while since I done this...so I'll not say what I remember.. Have you replaced the terminal plug into dynamo...control unit plug ..clean etc.. Earthing to me.. Quote Share this post Link to post Share on other sites
KKCortina 2 Posted April 18, 2018 Will have another look NogE! Thanks for reply! KK Quote Share this post Link to post Share on other sites
myle087 2 Posted April 19, 2018 Simon , to polarise flash live terminal of battery i.e.+ to small terminal on dynamo while making sure that the body of the dynamo has a good earth ,flash it several times there should be a blue flash Also check the earth wire on the reg or make a new connection from reg to earth that could cause it .I think the earth wire is separate to the grey block connector . Quote Share this post Link to post Share on other sites
KKCortina 2 Posted April 19, 2018 Thanks Myles - knew you would come to my rescue sometime! Hope all well up in Dublin! Quote Share this post Link to post Share on other sites
myle087 2 Posted April 19, 2018 All's well in the Capital Simon ,should have said disconnect big terminal as well before flashing live to small one. Quote Share this post Link to post Share on other sites
nogE 91 Posted April 23, 2018 <blockquote class='ipsBlockquote'data-author="myle087" data-cid="672285" data-time="1524156264"><p> Simon , to polarise flash live terminal of battery i.e.+ to small terminal on dynamo while making sure that the body of the dynamo has a good earth ,flash it several times there should be a blue flash Also check the earth wire on the reg or make a new connection from reg to earth that could cause it .I think the earth wire is separate to the grey block connector .</p></blockquote> That's it... I hv a nos dynamo here and it has sticker on it saying that..touch the wire from live 4or5 times... Quote Share this post Link to post Share on other sites
KKCortina 2 Posted April 26, 2018 Thanks NogE + Myle087 - will report back when I try same ! Quote Share this post Link to post Share on other sites