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Discussion Starter #1
Got a wiring problem, no dash lights and no rear side lights, the 10amp light fues blew, I replaced it and it didn’t blow again but still no lights, any ideas??
Relay?
 

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Short circuit maybe if the fuse is blowing. 4/5 pin Relays are cheap, try changing that. If it blows again then most likely a short circuit.
 

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Hi Al,

There are two fuses related to the dash and side lights. They are located
just above the 2nd relay from the right in the bottom relay row. Both fuses were blown,
or just one of those? (...and do you have AlfaControl? As I recall, no, but i'm not sure)
There's no relay involved in the dash and side lights supply.

You can try to check the correct operation of the light switch:
- you'll need a test bulb (12V / 10 to 21 watts)
- remove one of the fuses mentioned above (e.g. the upper one) in order to make the fusebox terminals accessible.
- connect the bulb between the chassis and and one of the fusebox terminals while the the light switch is on.
You can use the blown fuse to access the the fusebox terminals.
If the bulb doesn't lit try the the other fusebox terminal related to the same fuse. The bulb must light brightly,
until the light switch is on. You may repeat the procedure on the lower fuse as well.

If the bulb doesn't lit at all, the power supply of the light stalk switch should be checked:
- It's required to remove the "nacelles" of the steering column, in order to access the two four pole connector of
the stalk switch.
- On the stalk switch look for a connector with the thick, red wire.
- Connect the test bulb between this red wire and chassis. The bulb must lit brightly regardless of the switch state. If not, there's a wiring fault between the positive branch terminal board (behind the intermediate bulkhead in the engine compartment) and this connector terminal.
- Connect the test bulb to the yellow wire terminal of the other four pole connector and chassis. The bulb must lit brightly when the light switch is on. If not, there's a failure inside the stalk switch, probably the high current
generated by the short circuit caused permanent damage to the switch contacts. In this case further inspections
should be performed to find out what caused (or where is) the short circuit between the fusebox and the lights.

I hope this will help to start investigate the problem.
 

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Discussion Starter #4
Hi lonewolf33,
Thanks for your reply.
I was looking at the wrong fuses, the one I replaced was the middle row 2nd and 3rd down, one of them must have blown at the same time as the 3rd row bottom, which I have now replaced and all is ok.

There is a pink/black wire
that is live when the ignition is turned on, it is paired with a brown/white wire, I cant believe that this is left loose. I have taken the cover off the brown/white wire and put it on the pink/black wire and put gaffer tape over them.
Any idea what they are for?

I wonder if that shorted on the back of the fuse box causing this


I will cut off the connector and crimp on a new one.
 

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Hi Al,

If i understand correctly, the blown fuses are in the position as the marked ones in the attached figure.
Those are protecting the front dipped headlights.

The pink/black and the brown/black wires are (should be) attached to the brake light switch
in the 4WD version 33s. The 4WD version 33s have different brake light switch compared to the 2WD version ones.
 

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Discussion Starter #6
Hi lonewolf,
originally one of those fuses you have indicated blew, I replaced it and it hasn't blown since, the bottom right one also blew but I didn't see that until I checked all the fuses because I still had no rear side lights. So I took my car apart for nothing lol, I was going to check the back of the fuse box anyway.

I can't believe Alfa left the pink/black & brown/white wires floating like that, mine is 2wd and has a red and white wire going to the brake pedal switch.
Thanks for your help.

All seems ok again :)
 

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Glad to hear!

I think the pink/black and brown/white wires are originally taped to the wiring loom when not used,
but the tape (and it's adhesive layer) is aging by time, or some1 might abused these wires before.
On the 4WD models a dual circuit brake switch is used (instead of the standard one circuit switch),
one circuit for the brake lights (red and white wires), and the other is a signalling to the 4WD control unit,
which disengages the rear wheel drive when the brake pedal is depressed.
 

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Discussion Starter #10
I am worried that if the fues blows when i turn on the lights that if there is a test bulb in the circuit connected to the fuse it will allow current to flow and melt the wiring where the short is.
 

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In case if you put a test bulb in series with the fuse the tesbulb will act as a current limiter.
e.g.: an 12V 5W bulb will allow approx. 0.4 Ampers in case of short circuit.

If you share with us which fuses were blown (you might use the diagram i sent earlier), that could
help to figure out what causes the problem.
 

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Discussion Starter #12
3rd row bottom
:)
There is a multi block connector under the fuse box by the front of the drivers door that goes to the rear down the right of the car, this branches off and goes under the drivers seat to the center console area, I have disconnected that and the fuse still blows. Could something near the gear stick or something else at the rear cause that fuse to blow?

I'm still confused about using a buld, wont it light regardless of a short or not as the power is going through it?
 
K

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if the 33 is anything like a sud then the wiring behind the clocks has probably shorted onto the car body. my old red one had melted nicely behind there where loose wires were sat against the seam so they chafed away nicely until through the insulation.
also there is a loose supply wire to the centre consol lights, maybe this has shorted somewhere?
 

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Discussion Starter #14 (Edited)
I am about to investigate :)

Does anyone know exactly what the 3rd row bottom right fuse feeds?
My plan is to lower the fusebox, remove all feeds from the fuse in question and add them back 1 at a time until I find the one that blows it.
http://i187.photobucket.com/albums/x73/bigal333/fuesboxearthconnectorfordash.jpg

I think it powers the following

Rear side lights
Rear number plate lights
Dash lights
Glove box light
Centre console lights, including cigarette lights & heater control lights?
boot light?

Anything else from the rear, like fuel gauge sender?

The only after market electrical things I have fitted are console LED lights, some of which have blown but I have not got round to replacing them. Oil pressure & volt meter gauges, the lights for which are powered from the cigarette light and an ignition live feed from a spare wire from what I think is one of the connectors for the alfa control, which I don’t have.

All gauges work btw and rear brake lights, indicators and reverse light and fog light.
 

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Discussion Starter #15
I made a reusable fuse by cutting the top of the plastic surround off of the old one and using a single strand of wire wrapped it around the exposed poles, I tested it and it blew/broke when turning on the lights.
I then went straight to this connector

and disconnected it, it has caused me problems in the past, I replaced the broken wire/fuse, turned the lights on an it didn’t blow. I removed the replaceable fuse with a normal one to check and all was ok :)
I squashed the spade connectors together to make better contact, replaced the reusable fuse and tested again, all ok.
Where can I get connectors like this


With the hole in the side to hold it in place in the block connector?

Off now to get some replacement fuses as I used all my spares up :)
 

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Does anyone know exactly what the 3rd row bottom right fuse feeds?

I think it powers the following

Rear side lights
Rear number plate lights
Dash lights
Glove box light
Centre console lights, including cigarette lights & heater control lights?
boot light?
Correct, plus the following stuff are still fed from that fuse:
Backlight of the instrument panel
Backlight of the clock
Ashtray light
Backlight of cigar lighter
"Lights on" signal

Anything else from the rear, like fuel gauge sender?
The fuel gauge (and it's sender) is protected by the 10A fuse, labelled as "Servizi/Services".
 

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Discussion Starter #17
cheers lonewolf, good to know, I was close:)
I wonder why Alfa put what I can only describe as an extention earth wire there, its just adding more connections/resistance, you can see the state of the wire, which i will replace.
 

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Cheers,

I'm just realized you mentioned the dash lights already.
Yes, that wire is in really bad shape. I agree, there's not much sense of this junction,
but no doubt, it survived it's design lifetime.
 
K

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Where can I get connectors like this


With the hole in the side to hold it in place in the block connector?

Off now to get some replacement fuses as I used all my spares up :)
these should do the job :thumbs:

http://www.ebay.co.uk/itm/100-6-3mm-UNINSULATED-FEMALE-SPADE-CRIMP-TERMINAL-/200708399545?pt=UK_In_Car_Technology&hash=item2ebb2721b9

i just went into a local motor electrical specialist place, into the stores, and ordered a box full of decent ones that clip into the holders.

can find the part numbers if you like?
 
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