what is this and why is it disconected?
 

ok
been having a few problems
the alarm keeps going off
battery is regularly flat
alarm people have had a look
had a new battery fitted
seemed to fix problem
3 days later battery flat
took it to subaru garage
they could not find fault
got it back working fine
had a look under the bonnet
this (see picture) was disconected
subaru said they didnt move it
alarm people said they didnt shift it
son said he hasnt moved it
and i know i have not removed it
so i pluged it back in , but what is it

thanks in advance
Norman

Norman

I'm presuming your question is a serious one. This lead plugged into your alternator is for the charge circuit to your battery. The alternator outputs current in a regulated fashion [as in via a regulator, which is integral, inside our alternator] to the battery. In this way it keeps it topped up, and not overcharged.

With that plug out, your battery would be drained of current every time you switched on lights, fans, etc.

This in turn would cause the alarm to go off once voltage was very low [failsafe anti-tampering circuit cuts in], and the other problems you describe.

It was probably left off by mistake by whoever put in your new battery, and that by your description was the alarm people.

Good news is all should be OK with it plugged in, UNLESS the regulator in your alternator is faulty. I expect it's OK though.

Joe :)

thanks for that
it was a serious question
and a detailed answer
thank you
norman

Hope it has sorted the problem for you Norman. In typical fashion, one expert always blames the other when something silly goes wrong.

How have you been keeping? That was a miserable wet day to finish off the JAE.

Has your son still got the MX5? Good little cars they are. Just don't hold as much gear as an SVX, is all. :rolleyes: ;)

Hope to see you at the next event.

Joe :)

Joe,
Thank you, for your much appreciated tutorial on the electrical
Innards of my wonderful over engineered old lady!

Norman.

Well, Norman

You are like me, old enough to remember the Morris Minor.

Over engineered is just the way we like them!!! :D

Joe :rolleyes:

I've heard of these becoming loose on their own over time...especially if the retaining clip is broken.