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 Posted: Mar 4, 2019 06:03AM
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CA
Did you clean the contacts INSIDE the voltage regulator? This video shows how to clean the contacts inside the regulator. Note it is different from your regulator but the inside components are very similar and the cleaning concept is the same. In this video, he is rejuvenating an old regulator where the contacts have corroded and worn with age.

https://www.youtube.com/watch?v=M9G2qe7Pd60

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"Hang on a minute lads....I've got a great idea."

 Posted: Mar 3, 2019 08:50PM
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I cleaned the voltage regulator leads twice with acetone.  I tested each lead with my multimeter, and it's conductive.  I also saw that a few wires are corroding, so I took a little sandpaper to the terminals.

I got the generator to spark -- the problem was that I connected the alligator clip to the positive/red terminal of the battery.  When I switched to negative/black terminal and touched the generator's lead, it sparked.

I tried starting the car, it took a solid 30 seconds of attempts (something it's never needed before), and the engine started, but the IGN light is still on.

Also, some time in the last day, I blew my last fuse.  Going to put an order in right now for more.

Any ideas?

Thanks,
Ryan

 Posted: Mar 3, 2019 08:04AM
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CA
Try Doug Lawson's advice about cleaning the contacts inside the  new voltage regulator you have. If that doesn't work, try putting the old one back in. Make sure the wire connections to the voltage regulator are correct, clean and tight.

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"Hang on a minute lads....I've got a great idea."

 Posted: Mar 2, 2019 03:51PM
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I tried polarizing the generator during the week, but my battery had died again.  I picked up a trickle charger (there's a good sale at AutoZone right now!).  The battery's fully charged, and I can start her up from the push button, no problem.

Here were my steps trying to polarize the generator (please note: I'm new to car electricals):

* I turned off the car
* disconnected the wire from the smaller lead of the generator that runs between it and the voltage regulator
* took a good, long length of 14ga wire (it's the thickest I've got); attached alligator clips to the ends
* tested with my multimeter that there's no break in the wire from clip-end to clip-end
* attached one of the alligator clips to the positive/red terminal of the battery
* touched the smaller lead of the generator with the other clip

...no spark.

* clipped on to the smaller lead of the generator

...still no spark.

* disconnected the wire from the generator, then the battery
* turned the car on

... IGN light's still on.

Where am I going wrong?

Thanks,
Ryan

 Posted: Feb 22, 2019 04:20PM
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US
Quote:
Originally Posted by Ryannnnnnnnn
Yeah, the voltage regulator is brand new.
Did you open the new control box and clean its relay contacts?  That is a MUST on the current replacement control boxes.  They are shipped with a Cosmoline-like coating on the contacts to prevent their corroding while in storage.  That coating is an electrical insulator.  Use acetone on a rag dragged through the contacts to remove the coating.  Do this several times to make sure you have removed all the coating.  Failure to remove the coating means there is a good chance the regulator will never work.  

Zoom in on the picture shown in the link below.  You'll see there is a warning label about cleaning the contacts.
https://www.bpnorthwest.com/voltage-regulator-lucas-mga-tr3-tr4-tr4a-plug-in-style.html

Also see the link below for an electronic voltage regulator that is available.  Unfortunately I have only seen these available with screw terminals... no spade lugs.  To use it you would need to modify your car's wiring harness to remove the female spade terminals or you would have to buy some form of male terminal and modify them to fit the screw terminals on this regulator.
https://www.bpnorthwest.com/voltage-regulator-digital-lucas-screw-in-terminal.html

Doug L.
 Posted: Feb 22, 2019 03:26PM
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US
If your iginition light stays lit when running, it's an indicator that your battery is not charging.   Check your fan belt and make sure you don't have more than a small deflection in the longest run of the belt between pulleys.  Also go to the boot and remove the short ground cable from the battery and the body.  Clean the ground cable end and the metal where that cable is bolted to the body. When you reinstall it, use a star washer so that it 'bites' into the boot floor pan.  Most electrical problems start with bad grounding of the circuits. Black wires on the mini are ground wires.  Do you have a Haynes workshop manual yet?  If not, buy one for your year car.  It will not only have an electrical schematic, but give you all the procedures for making repairs to your car. And there's usually a section for troubleshooting.  Worth the few dollars.

 Posted: Feb 22, 2019 01:48PM
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Yeah, the voltage regulator is brand new.

 Posted: Feb 22, 2019 05:51AM
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US
You said the generator was new.  Is the generator control box also new?

Doug L.
 Posted: Feb 22, 2019 05:35AM
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 Posted: Feb 22, 2019 05:12AM
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CA
The battery may still not be up to snuff. A 12V battery has 6 cells, each of which produces 2.2 volts when good. 6 x 2.2 = 13.2V. Depending on how Autozone tested it it may be OK - if load-tested the voltage reading would be slightly lower. If it is just a straight voltage meter reading, I'd still be suspicious of it.
As I said before, and as concurred by onetim the charging voltage needs to be higher than the battery voltage to recharge it. But not too much or the battery will be cooked! One symptom of excess charging voltage is a suphurous or rotten egg smell from the battery.

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"Hang on a minute lads....I've got a great idea."

 Posted: Feb 22, 2019 05:12AM
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US
Glad your back up and running. Thanks for the update.

"How can anything bigger be mini?"

 Posted: Feb 22, 2019 05:00AM
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Hey Ryan, you should see a voltage rise across the battery running verses not. if the battery voltage is the same running or lower as when the engine is stopped, it's not charging. Usually this is a couple 3 volts variation at the most. 

 Posted: Feb 21, 2019 10:49PM
 Edited:  Feb 21, 2019 10:51PM
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Evening everyone,

I took the battery in for a 10-hour trickle charge at the shop I bought it from (the shop owner asked to do this before replacing it outright).  On my way home, I stopped by AutoZone and asked them to check the battery out.  It got a clean bill of health, running 12.8 volts with a full charge.

I installed it, and my Mini started up!

My IGN light is on constantly, so I need to read through the forums to start working on that problem.

Thank you all for your help!
Ryan

 Posted: Feb 17, 2019 03:17PM
 Edited:  Feb 17, 2019 03:17PM
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I just watched the YouTube video, and I accidentally did that yesterday before posting the thread, and yep, I got that small spark.

Battery update:

Went back to AutoZone to pick it up. They said my 10 month old Interstate battery's bad.  They tested it again in front of me, and sure enough, "bad battery" on the readout.  So I'm hoping the shop I picked it up at is open tomorrow on Presidents' Day.

I'll let you all know when I put the replacement in.

Have a good weekend & thanks so far!

Ryan

 Posted: Feb 17, 2019 02:58PM
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Since it is a new generator, is it polarized correctly to match how your car was polarized when everything was previously working?

https://www.youtube.com/watch?v=NV8FFgia7uU

 Posted: Feb 17, 2019 01:48PM
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If I am reading the electrical diagram correct, the upper fuse only goes to the dome light and horn.

"How can anything bigger be mini?"

 Posted: Feb 17, 2019 01:07PM
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CA
If the car is a '62 and has a generator, then it probably has a voltage regulator. This is an electro-mechanical device that limits how much charge goes from the generator to the battery and all the electrical circuits.
It should allow about 13 or 14 volts to pass back to the battery. The battery at full charge should actually provide 13.2 volts, and to charge it, the charging voltage needs to be a bit higher than the battery.

It uses coils and breaker points to control voltage. Over time the points get worn or corroded and need to be cleaned up. Then there are adjustment screws to actually set the voltage throughput.

Test it with your multi-meter.
Check also the belt tension and the generator connections are correct.

.

"Hang on a minute lads....I've got a great idea."

 Posted: Feb 17, 2019 12:39PM
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Hi All,

Thanks so far.

Status update: I'm picking the battery up from AutoZone later this afternoon.  It was showing 10.5 volts when I took it in, with 0% charge.  The battery's 10 months old.

Newbie question: when we push-started it yesterday and drove around for about 20 minutes, why didn't that recharge the battery?  It's got a new generator just put in.

Thanks again,
Ryan

 Posted: Feb 17, 2019 07:50AM
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Quote:
Originally Posted by Ryannnnnnnnn
I bought my '62 Morris Mini a little over a year.  

When I push the ignition button, I hear nothing at all.  The engine doesn't try to turn over.  Just complete silence.


I suggest following Spank's advice.  Get the battery charged and try again.  If you still have silence when you push the starter button, try the following.
Place the battery on the floor in front of the car.
Place the gear selector in neutral.
Connect a set of jumper cables as follows:  Red lead to battery plus, other end of red lead to the big battery cable on the starter motor.
Connect the black jumper lead to battery minus.

Make sure the other end of the black jumper cable lead is NOT touching anything yet.  Rest it on a towel or similar.
When you are ready, take the lose black jumper cable lead and press it firmly against a bare metal spot on the engine.

If the engine would not turn over with the push button but does turn over with the jumper cables, the problem is in your push button starter switch.

NOTE:  During the jumper cable test, when you push the black lead against the bare metal spot on the engine there WILL be a big spark.  That is normal.  Don't let it scare you.  It won't hurt you.

Doug L.
 Posted: Feb 17, 2019 04:07AM
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While the battery is out charging would be a good time to check and clean the large wire connections at the starter switch. Also check/clean both ends of the engine ground strap and the battery ground strap.

"How can anything bigger be mini?"

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