Hi I have just replaced the brushes on my Dynamo , as the red light on the dash was constantly on. (as one of the cables from the brush had broke loose) .The red light is now still on !!! Any advice would be great thanks
Hi, just a guess - maybe the short has burnt the contacts inside the control box? You should be able to remove the cover from the dynamo control box (not sure where it is on an Escort but Cortina used to be by the glovebox), and flick each set of contacts (3 seperate?) to make sure they are free to move. Gently clean the contacts with very fine emery paper when lid is off.
It's personal choice but with my cars I've always replaced dynamo with alternator if it hadn't been done before I got it. Maybe worth thinking about?
Does it need repolarising? Otherwise if the brushes are in properly and not sticking or anything it could be the control box which to be honest seem a bit rubbish if it's needed to be replaced in the last 15 years. If it doesn't need to stay original you can get replacement alternators that look like a dynamo.
Hi, I think you're thinking about polarizing the dynamo if the dynamo is new or the vehicle polarity has been changed. Which you do by 'flashing' the battery lead onto the big terminal a couple of times, or just connecting it straight on but you do risk the points sticking in the regulator as nomad suggests.
I've checked the contacts inside the control box and seem ok Stripped the dynamo again and refitted, but still red light on dash🤔 To be fair playing around with a 44 year old dynamo ... think I will get a new one, if the red light is still on.......I'll be back on here crying Thanks to all for the advice👍🏻
Just checked control box, put cover back on, turned ignition on and no lights on dash.... Started up and red light on dash came on and stayed on..... Replaced all fuses.....great ignition lights come on.....and no more red light when running!!!!!