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Instrument cluster fuse blowing

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fscolarojr
Posts: 3
Joined: Tue Oct 30, 2018 2:59 pm
Location: New York

Instrument cluster fuse blowing

Post by fscolarojr » Tue Oct 30, 2018 3:12 pm

Hi. The 7.5A fuse for the right side of the instrument cluster started blowing. Not always immediately, but every couple of times when I start the car. It's an '87 M6. Where to start?

Pod
Bigcoupe supporter
Posts: 3890
Joined: Tue Mar 16, 2010 8:32 pm
Location: usually in the barn, Kent, England.

Re: Instrument cluster fuse blowing

Post by Pod » Tue Oct 30, 2018 6:11 pm

Do you mean fuse #23?

fscolarojr
Posts: 3
Joined: Tue Oct 30, 2018 2:59 pm
Location: New York

Re: Instrument cluster fuse blowing

Post by fscolarojr » Tue Oct 30, 2018 7:18 pm

Just checked, Fuse #10. Realized the left side of the cluster is all mechanical...

Pod
Bigcoupe supporter
Posts: 3890
Joined: Tue Mar 16, 2010 8:32 pm
Location: usually in the barn, Kent, England.

Re: Instrument cluster fuse blowing

Post by Pod » Wed Oct 31, 2018 9:50 am

According to the official BMW (US) manual, fuse #10 is instruments and OBC. Suggest you try disconnecting the OBC first and see if it still blows.

If that fails to work, you could try disconnecting various feeds to the instrument panel. That may indicate the problem.

If that fails, try connecting a known-good instrument panel to see what happens. If it still blows then it must be a short in the wiring.

fscolarojr
Posts: 3
Joined: Tue Oct 30, 2018 2:59 pm
Location: New York

Re: Instrument cluster fuse blowing

Post by fscolarojr » Wed Oct 31, 2018 1:18 pm

Thanks. Car runs fine, so assume the OBC is OK

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