What is the fat black wire, left most on the fusebox  (ie. the one nearest to the +ve terminal on the battery).

 

I haven't traced it, but I am going to guess it is the alternator cable?  Is there anything special about it?

 

I am sure you can guess where I am going with this :-(  While doing an oil change this morning, I ran the car to let the oil settle, and did a spot check the it was obviously warm (but not hot, and certainly not melting going on).  However I might as well get on and fix it, so I have the option of buying a dealer cable (or maybe making my own up if someone can tell me the required size & length of cable, plus the size of the crimped on connectors....  Car in question is a 2001 110TDi

 

Thanks,

Matt

mine got real hot and melted my fuse box so replaced all seems good bad resistance causes the cable to get hot

What is the fat black wire, left most on the fusebox (ie. the one nearest to the +ve terminal on the battery).

I haven't traced it, but I am going to guess it is the alternator cable? Is there anything special about it?

I am sure you can guess where I am going with this :-( While doing an oil change this morning, I ran the car to let the oil settle, and did a spot check the it was obviously warm (but not hot, and certainly not melting going on). However I might as well get on and fix it, so I have the option of buying a dealer cable (or maybe making my own up if someone can tell me the required size & length of cable, plus the size of the crimped on connectors.... Car in question is a 2001 110TDi

Thanks,

Matt

Yeap alternator cable.

It takes a lot of current. Check the nuts are tight and the 120 amp flat fuse is good. If loose nut this will cause resistance.

If tight then you have the start of a bad cable.

There is a thread on this in techi section

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Yeap alternator cable. It takes a lot of current. Check the nuts are tight and the 120 amp flat fuse is good. If loose nut this will cause resistance. If tight then you have the start of a bad cable.

There is a thread on this in techi section

 

 

You can also make a search on the net for: VW JETTA MK4 Alternator cable and you will find a lot of info on this matter.

 

Its look like VAG manufacture several cars with a low quality alternator cable that have hi resistance to the flow of the current. This resistance make the cable to get hot and this also damage/melt the fuse box on top of the battery.

 

Good luck,

 

Isaac

Edited 23 February, 201412 yr by Turbo_Boss

Haven't checked this on mine yet but knowing my luck this will prob need to go on my list... hence the name lol

after a run in the car pop the bonnet lift the fuse box lid and touch the black cable and nut if its hot change it lol 

Haven't checked this on mine yet but knowing my luck this will prob need to go on my list... hence the name lol

Get this bought, from our friend on here:

http://bit.ly/1enjXVi

He has the cable to I believe.

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This was what happened to mine and i did a fix in this thread:

 

http://www.briskoda.net/forums/topic/220346-battery-issues-fuse-box-melting/

£50 for a new cable.... thieves :-(

When I need to I borrow my son's one of these - http://www.ebay.co.uk/itm/230744564665?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

 

Makes life easier, but the cable must be in good condition that you are crimping to.

I borrowed this to recrimp mine

That's a serious pair of crimpers there

Which end needs crimping, as I know there's a bolt at one end what's at the other?

I crimped battery end.

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