Paul,

no hurry with a box, I will have them also in spring...

BTW: this is like my relays box looks now, my radiator fans run is a two step mode, at 80 degrees they run serially with 6Volts each, at 88 they run parallel with 12v and 2780m3/h

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RaymondQV
Countach QV Ex-Mimran #GLA12997, Urraco P300 #20530 sold in August 2008, Jalpa #FLA12203 sold in May 2006
www.countach.ch
www.jalpa.ch

When Frank Sinatra got his Miura S in 1970, he said: “If you wanna be someone, buy Ferrari - If you are someone, you own a Lamborghini”.

In my previous post, I asked about the fuse box in the glove box. Raymond I was wondering if you knew what each of those fuses were for and the proper fuse amperage to be put in the holders. I was wondering if you have a daigram for that as well. Thanks in advance.

the saga continues!
Got home and the car barley turns over! I suspect massive current drain somewhere as the battery is fuly charged and in good conduition. If I persevere the power seems to build up and the engine will catch. I suspect in wiring the two 1 and 2 fuses together that the system cant cope with the power usage!
Have asked him to come back and sort this mess out as was keen to run the car and need it for next friday night. Dont want to get stuck with current drain and the car hardly turning over at all! It's embarassing in a public place!
Anyone any ideas? Appreciate the idea of simply renewing the whole fusebox and relays as a one solution. but this is electricians problem!

Hmm, what could this be, does the car hardly turn over or does it hardly start, since when the plugs got really wet they hardly regenerate.
You need at least some hours with a hot engine to dry them from the fuel, otherwise change them.

If it hardly turns over this might also be caused by a bad connection at the starter, the starter is directly connected to the battery stud in the engine compartment. Left side just next to the fuel filter, there is then also the small wire which leads the solenoid (magnetic hold back) of the starter.

I suggest your electrician shall take the car again and measure all wires for current drain, mainly the dashboard on all the Lambos is badly wired, namely the ground connections have an insufficient diameter.

Finally it's not that complicate, the car has beside the ignition box no electronic stuff, the rest are simple relays and switches.

The only thing I know is the fuse overview in the owners manual on the last pages, I'll check the 25th wiring diagram this evening perhaps this can help as well.

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RaymondQV
Countach QV Ex-Mimran #GLA12997, Urraco P300 #20530 sold in August 2008, Jalpa #FLA12203 sold in May 2006
www.countach.ch
www.jalpa.ch

When Frank Sinatra got his Miura S in 1970, he said: “If you wanna be someone, buy Ferrari - If you are someone, you own a Lamborghini”.

Raymond

the car hardly turns over as if the battery is flat. this makes me think it is current drain on the wires. After a few attempts where it sounds like it is a a flat or very weak battery it will catch and turn but slowly.

I took the car out for a brief 16km drive last night and when i came back even with the fans running it initially started ok, but after leaving an hour it was back to the same!

I suspect he has either loaded some wire too much or shorted something , which gives me more cauase for concern!

The starter is fine as when we had the engine out I had it refurbished as the previous owner said it clicked occasionaly. the earths etc were fine so no work done in engine bay so should remain fine

Will let you know what happens. We are looking for a wiring diagram for fuse box, as in a full diagram more than in the handbook. If you do have one or If i get one from my sources over here I will post it or could you?

Regards

Paul

One hint, when you start the car the fans are turned off to get full power on the starter, this is called the fan exciter relay.
On the picture I posted it's the grey relais left of the one with is noted with starter, on the other picture from the 25th owners manual it's the R-Relay.

I'll check for the diagrams this evening.

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RaymondQV
Countach QV Ex-Mimran #GLA12997, Urraco P300 #20530 sold in August 2008, Jalpa #FLA12203 sold in May 2006
www.countach.ch
www.jalpa.ch

When Frank Sinatra got his Miura S in 1970, he said: “If you wanna be someone, buy Ferrari - If you are someone, you own a Lamborghini”.

The owners manual seems to describe a little bit the fuses and relays under the glove box but isn't that much help.
The 25th wiring diagram shows more but the fuses etc are completely differently allocated in the car.

__________________
RaymondQV
Countach QV Ex-Mimran #GLA12997, Urraco P300 #20530 sold in August 2008, Jalpa #FLA12203 sold in May 2006
www.countach.ch
www.jalpa.ch

When Frank Sinatra got his Miura S in 1970, he said: “If you wanna be someone, buy Ferrari - If you are someone, you own a Lamborghini”.

A bit off-topic but this is too similar to a problem I had recently to let pass. I have been trying to figure out the wiring on my newly-acquired 88QV. As in Raymond’s there is a sliding relay box on the LHS of the boot. The only (very patchy) wiring diagram I have does show the two radiator fan relays with double wiring, but on tracing everything, only one is connected, supplying both fans. One of the relays, although present, goes nowhere. This is not a hash-up, it is clearly original wiring. (is this my introduction to the delights of Italian automotive electrics?) I’m tempted to rewire everything using both relays, but I hesitate since there may be a reason for the single relay. Any ideas?

BTW the fuel pump appears to have two relays and an electronic timer device, which presumably prevents the carbs from being flooded if the ignition is left on without engaging the starter. My timer device became inoperative and the Lambo part is no longer available (I’ve shorted the switching output to get the pump working). After much research, it appears that a BMW part is identical, but I’ve yet to confirm this.

I can confirm you everything since I know these cars by heart...

1. There are 2 relays which were double wired because the swiss cars had 3 fans the arabian even four, one in front of the radiator the other behind.
Since most of the cars have only 2 fans it's better to run one fan per relais, this reduce the strength on the relay and fuse.

2. From 1988 on they installed also this BMW fuel relay which cuts off the pumps after about 10 seconds when the engine is not running. Not a BMW part is identical it IS a BMW part, normally the BMW sign is stamped on top.

The wiring diagram of the 25th I have for sale on ebay right now shows this, the relais box in the rear trunk of the 25th is identical to the 1988.
http://cgi.ebay.de/ws/eBayISAPI.dll?...m=300170973667

Here the deformation of the plastic box because of the heat:
http://www.countach.ch/Fusebox/index.html

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RaymondQV
Countach QV Ex-Mimran #GLA12997, Urraco P300 #20530 sold in August 2008, Jalpa #FLA12203 sold in May 2006
www.countach.ch
www.jalpa.ch

When Frank Sinatra got his Miura S in 1970, he said: “If you wanna be someone, buy Ferrari - If you are someone, you own a Lamborghini”.

Hi Raymond
Thanks for the advice, much appreciated.
I ordered the new BMY part, but it still doesn't work.
To test the device, I applied 12Vdc to the input terminals, then measured the resistance across the 'output' terminals. I expected to see the o/p go closed circuit for a few seconds, then go open circuit. But nothing happened. Am I missing something? Or being daft in some way?
Auto electrics are a bit of a black art, but you appear to have it sussed...