MGT

Well-Known Member
Full Member
I noticed that the fuse for the alternator is shown as being 41 on the diagram in the fuse box, but the fuse is actually in slot 42.

This vehicle hasn't been driven by me yet (I had it trailered in) so I don't know if battery is charging normally or not.

I can't see an easy way to check the wiring so was wondering whether it is likely to be a problem if I simply double up on the fuses by putting one in slot 41 as well as slot 42.
 
Voltmeter across battery and start it up.

12 ish Volts before starting. 13.5 to 14.5 when running.
Thanks. I can do that. So lower readings will indicate that the alternator circuit is broken and therefore the fuse is in the wrong slot?
 
So lower readings will indicate that the alternator circuit is broken and therefore the fuse is in the wrong slot?
Not quite !

Lower readings will show the alternator is not charging for some reason which will need to be traced through to find the reason.
 
Not quite !

Lower readings will show the alternator is not charging for some reason which will need to be traced through to find the reason.
Yes I see, thanks.

However if the readings are within parameters then that means a complete circuit, no?

I am assuming a broken alternator circuit would drop the readings even without significant drain on the battery?

I can get rid of the question just by inserting another fuse in the other slot, so long as there is no reason not to.
What I don't want do is complete a circuit that has been intentionally left broken. I can't see a reason for that being the case but that doesn't mean there isn't one.
 
I haven't got 40 plus fuses in the fuse box anyway on mine !!
1. Plugging in a fuse when there isn't one is dodgy and could cause a fire. It may have been removed for a reason or is not fitted to your model.
2. Plugging another fuse in still won't tell you whether it is charging or not.

Have you got an allergy to test equipment ??
 
I haven't got 40 plus fuses in the fuse box anyway on mine !!
1. Plugging in a fuse when there isn't one is dodgy and could cause a fire. It may have been removed for a reason or is not fitted to your model.
2. Plugging another fuse in still won't tell you whether it is charging or not.

Have you got an allergy to test equipment ??
No. I have no idea what is wrong with me, if I'm honest.
Anyway, I carried out the test as per instructions and all seems good.

Thanks for taking the time and trouble, as always.
 
No. I have no idea what is wrong with me, if I'm honest.
Anyway, I carried out the test as per instructions and all seems good.

Thanks for taking the time and trouble, as always.
Now that you’ve established there was no issue with your fuse or alternator 😁 - could you pop over to your ‘ignore’ thread and enlighten us all as to what it is/was that we are all ‘ignoring’… pretty please? 👍
 
Now that you’ve established there was no issue with your fuse or alternator 😁 - could you pop over to your ‘ignore’ thread and enlighten us all as to what it is/was that we are all ‘ignoring’… pretty please? 👍
I would...if I could remember.
 
And why you have 42 fuses ?!?!?
Ah. I don't know. It is a 3 door commercial - what LR called a 'special vehicle' (it has a badge saying so). There's a lead trailing in the front of the engine bay and another one trailing by the passenger seat, and I have no idea what either of them do or did. Maybe they are the reason.
I will investigate but first i need to get it through its MOT.
 

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