What are common electrical issues solved by new/rebuilt fuse box?

I suppose it depends on how much your current fuse box has deteriorated to date.

But........

It should make everything better, especially your confidence in the car.

Replace the corroded old metal relays with modern sealed Bosch units and also install new fuses. That will perk everything electrical up too. Someone on the forum supplies them as a set.

Your "W" connector may be burnt too, but the new box has new connectors for that, see pic below.
Alden
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I think the big problem with the fuse box is when the fuel pump stops working. Some people wire up the fuel pump separately.

The problem I see is that the female connectors inside the white plastic housing can come loose. A simple fix is to bend them back into position so they are tight, then apply contact cleaner. Of course if everything is already burned up, components will have to be replaced.

What I would suggest you do is pull all the white plastic connectors out, and inspect them. If nothing is burned, or loose, then the fuse box is probably not your problem.

The only problem I have had with my 86, is that the lights for the dash went out. Cleaning and tightening all the fuse box female connectors in the plastic housing fixed that problem. This is the original fuse box, which still works fine.

Keep trying the lid switch, it might just be corroded. It's important to exercise ALL of the switches regularly, or they might quit working.

 

I'll add again, "it depends" i.e. what's wrong with the one you have and which replacement board you will use/need.

I had an intermittent "no crank" issue (no starter click either) and running the a/c was burning some wires, plus some random drivability issues throughout the RPM range.

Afterwards, none of those problems ever occurred and the motor ran smoother and pulled stronger than ever before.

http://www.ferrarichat.com/forum/142162518-post3.html
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There are 37 (all kind of) Ferraris for the moment that have installed that fusebox. So I assume there whas a problem with the OEM of all those.
Burned wire connectors (because of to little connectors) most of the time.
Other problems ; fusion of the plastic layers with strange effects all kind. Connectors of relais, fuses and wire connectors coming loose. Sometime you have contact, sometime no contact.
OEM has 2 circuits on his board, so sometimes 1 circuit is overloaded and gets hot.
That fuseboard you have from Stefan has 1 round circuit over its complet board, so load is spread over all the + contacts. The 2 big + connectors are also connected to avoid overload.
It has bigger connectors with 2 pins of 2.5 mm2 instead of the little 1 pin 1.25 mm2 OEM for all relais, bigger male connectors for the wire contacts and the fuses have harder spring contacts that holds the fuses better. When loose they can be closed again in case. OEM connectors can't be closed again...they will stay open and the fuse will stay loose.
By the way, its me that makes them. Avantage is you can always repear it when there is a problem. OEM board repear is not done...its gets worse instead of better !
The problems you mention, like window speed, most of the time have other origins. But a relaible fusebox is the first investment you have to think of, when you have electric problems.
You can always count on us (Stefan and me) when you are in the need for assistants or more information. PM me in case ! You also can download for free an installation manual for this fusebox : Ferrari Remanufactured Parts for your Ferrari classic cars like fuseboxes and other

Guido

 

You said it! No point in troubleshooting a problem when the primary component has issues as well.

 

James,

Headed to cars and coffee in Golden tomorrow?