fuse 41 or 42 for alternator

M

MGT

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• Saturday at 22:21

• #1

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.

 

Nodge68

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• Yesterday at 09:08

• #2

Knowing what vehicle it is would help.

 

M

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• Yesterday at 12:41

• #3

Nodge68 said:

Knowing what vehicle it is would help.

Click to expand...

Good point! Freelander 1 td4 facelift first registered 12/03. Three door commercial.

 

andyfreelandy

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• Yesterday at 14:14

• #4

Voltmeter across battery and start it up.

12 ish Volts before starting. 13.5 to 14.5 when running.

 

Nodge68

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• Yesterday at 17:40

• #5

As above.

 

M

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• Today at 08:34

• #6

andyfreelandy said:

Voltmeter across battery and start it up.

12 ish Volts before starting. 13.5 to 14.5 when running.

Click to expand...

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?

 

M

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• Today at 08:35

• #7

Nodge68 said:

As above.

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Thanks.

 

andyfreelandy

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• Today at 08:57

• #8

MGT said:

So lower readings will indicate that the alternator circuit is broken and therefore the fuse is in the wrong slot?

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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.

 

M

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• Today at 09:52

• #9

andyfreelandy said:

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.

Click to expand...

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.