[bbarber1969]

I am new to Alfa Romeo with a recenty purchased 1988 Spider Veloce. Struggling to track down a short in the system that is pulling 100 mAmps when everything is turned off. I have Papajam's wiring diagram which will surely be helpful, but could certainly use help from those more familiar with these cable harnesses.

 

[bbarber1969]

To start with, the prior owner had dropped the central fuzebox from under the dash. From the maintenance manual, it appears that the dash/kneeboard panel should open up and provide better access to the wiring. I can't seem to figure out how to remove this panel and worried that I will break it trying. Is there a trick to this?

 

[bbarber1969]

Thanks for the suggestions. I hope to finally have time to work through these over the long weekend!

 

[bbarber1969]

if your car has an aftermarket alarm, look at that (I can spot an odd "button" thingy on the fuse box cover in your photo, that looks aftermarket for a start)...they can go bad and drain
100mA is a lot....should be 10-20mA (clock and radio memory)
A bad diode in the alternator can also allow a drain

but, as above, the prime suspect is the footwell lights getting kicked on when leaving the car....you could pull the light timer relay (the big one marked 0679, 3rd along from left) then see if the drain goes.

I have been very curious about the odd "button" thingy on the fuse box cover (good description). If I can get the knee bolster to release I definitely plan on tracing this out and will let you know.

I had planned to go fuze by fuze, but hadn't thought about the alternator diode.

Thanks!

 

[bbarber1969]

On the later cars the pivot is attached to the big one piece knee bolster. It swings down with the knee bolster in place.

This is good to know. From some figures I saw I thought that the knee bolster had to be dropped down or removed to store the fuze box. Sounds like I just need to figure out how to swing the fuze box back up under the dash after I finish troubleshooting. Thanks!!

 

[bbarber1969]

I have been very curious about the odd "button" thingy on the fuse box cover (good description). If I can get the knee bolster to release I definitely plan on tracing this out and will let you know.

I had planned to go fuze by fuze, but hadn't thought about the alternator diode.

Thanks!

It appears that the odd "button" thingy was intended to be a push button start. Intended to provide a circuit betwen fuze #8 lead (see blue/black wire in brown connector) to the ignition coil, although the wire at the ignition coil was loose with no obvious connection point.

 

[bbarber1969]

I thought it was aftermarket, but I have an old wiring harness that was provided by the prior owner that also include the same wire out of the brown connector and another push button. Makes me think it was at least a common modification. Either way, it was very sloppy and I removed it to help troubleshooting.

 

[bbarber1969]

Bigger problem that I found was several burnt wires in the fuze box (primarily at the light timer relay). First clue was the large amount electrical tape that was covering up a mess of damaged wiring.

 

[bbarber1969]

I replaced all the accessible wires, but I am concerned that others further under the dash may also be damaged. May explain why I have no power to the radio, AC, and power windows.

 

[bbarber1969]

I'm considering removing the dash so I can fully inspect the wiring, but not sure if I may cause more problems. Anyone tried dash removal?

 

[bbarber1969]

It appears that the odd "button" thingy was intended to be a push button start. Intended to provide a circuit betwen fuze #8 lead (see blue/black wire in brown connector) to the ignition coil, although the wire at the ignition coil was loose with no obvious connection point. View attachment 1748974

 

[bbarber1969]

I thought it was aftermarket, but I have an old wiring harness that was provided by the prior owner that also include the same wire out of the brown connector and another push button. Makes me think it was at least a common modification. Either way, it was very sloppy and I removed it to help troubleshooting.

Do you have the shop manual?

Yes. I found a reference to the button in the

The dash is not too difficult to remove (only 4 large wing nuts if I recall). I just takes some time because you have to remove the consoles, glove box, instrument cluster monopod and knee bolster(s).

Good to know. I might give it a try. I have the instructions in the shop manual.

 

[bbarber1969]

My mistake. Hit enter too soon. The shop manual does not show the button.
Odd that the shop manual does show a two piece knee panel with the left side opening outward to gain access to the fusebox (picture attached). Mine is clearly one piece and has more shape to it. My manual is clearly from 1988, but does not specify veloce or graduate. Maybe there is a difference between models?

 

[bbarber1969]

By the way, I am down to normal 10 mAmp drain. I'm sure it was related to the mess in the fuze box.