FFS! I've had all sorts of issues with regs, quite recently - fried the MFU in my D1 - think electric chair fried
- found the voltage up at 19.4V...
( shamelessly copied from another post by me on a similar subject .. )
Mid ulster rotating electrics have the spares for your alternator - BUT, i'd make damn sure you get the right regulator - it's par for the course now for regulators to allow rather silly voltages - like 15.3 ... and this will not do the relays and such any good on your RRC - if you have an MFU or an alarm, it will toast it nicely.. you can ask me how I know this too
I now use Hitachi regulators which limit voltage to 14.2, and, when they come off load - like when you switch your lights off, they drop the voltage instantly ...
And, yes, this has become something of a soapbox for me
--
( another cut and paste from another of my posts:- )
If you have a decent DMM, measuring the AC voltage across the battery terminals should give you a good guide - ideally you'd want to see 5mV
... certainly no more than 15mV
If Mid Ulster can't supply the correct set point regulator, then
www.buycarparts.co.uk - who are actually based in Germany
should be able to.
Assuming it's a Lucas Marelli A127x, then the reg will either be (Hitachi)130799 or 130820 - The rectifier is a Lucas 131304 ..
https://www.buycarparts.co.uk/hitachi/7825663
Here's a link to the mid ulster A127 page:-
https://www.rotatingelectrics.co.uk...or-rectifier-regulator-hd-vr-lc111-mob-rl-01h
As I mentioned before, watch the set point of the reg like a bl**dy hawk!!