First of all I want to introduce myself.
My name is Carlos, I am from Madrid, Spain and a car lover since I was very young.
My father took me to be born in a BMW 2800 cs of the year 1971. I have been keeping the car in garages, industrial buildings and even chicken coops for the last 20 years because my dream has always been to restore the car that my father bought in the Canary Islands more than 50 years old and brought to the peninsula in the 80s.
Having had the car in storage for so long, some people who didn't keep it used it and unfortunately misused the car.
I have to say that the car, after a visit to the workshop to renew the brakes, do the carburettors and some electrical issue, passed the ITV last month, which filled me with pride and enthusiasm to start using it.
Some pictures of my beautiful E9 (Ignore the emblem of 3.0 csi, my father put it to show off but it really is a 2800 cs, I will change them soon):
Now comes the problem I encountered......
Something that the electrician in my workshop did not want to face, was the burned cables that were under the steering wheel, they were all brown (earth). With a lot of patience and using the electrical diagrams in the handbook and those I found in this forum, I was able to isolate them and change them without having to disassemble the entire dashboard.
1.- Load Shedding Relay (39)
2.- ChangeOver Relay (38)
3.- Rear Fog Warning Switch (53)
4.- Warning Lights Relay (74)
6.- Heated Rear Window Switch (64)
Here I show you the complete cable with the names of the systems to which they were connected (sorry for my English in the descriptions).
I am not an expert in electricity but if I am very meticulous and little by little and with a lot of patience I have been able to change all the defective cables for new cables of 0.75 mm section, as indicated in the manual.
I have looked well in the forum trying to find a thread related to my problem with fuse No. 4, which I will explain below, since I do not want to repeat threads of topics that have already been studied by all of you.
The first thing to say is that when I brought the car home, fuse 4 had a 25-amp fuse instead of the 8-amp fuse that the manual indicates. This was done by some unconscious person who kept it for so many years without thinking about the consequences. . I think this is the reason for the melted ground wires. Once these cables have been replaced, and the correct fuses have been placed with their corresponding amperages as indicated in the manual, the following happens to me.
The car starts perfectly and when connecting the lights they all work perfectly (position, short, long and anti fog). The fuse only blows when the car is moving. I can be driving without turning on the lights indefinitely, but as soon as I turn on the lights, after a few meters, fuse Nº4 (8 amp) blows and the car dies and as soon as I engage the clutch, the car stops and when I turn the key the dash does not light up. The strange thing is that with the car stopped and started when the lights are connected, the fuse does not blow, the problem comes when the car begins to move.
I have thought about disassembling the fuse box and disconnecting the terminals that reach fuse Nº4 one by one and trying until I find which one makes the fuse blow when the car moves.
I have been reading this forum for years and the incredible experience that its members have, I hope you can help me, I always try to solve things without asking for help but in this case I have reached the limit of my knowledge and I hope that some kind soul can help me solve this mystery.
Thank you very much in advance to all of you, who without having written until now, have already helped me enormously in the past with the magnificent threads that currently exist.
Carlos
My name is Carlos, I am from Madrid, Spain and a car lover since I was very young.
My father took me to be born in a BMW 2800 cs of the year 1971. I have been keeping the car in garages, industrial buildings and even chicken coops for the last 20 years because my dream has always been to restore the car that my father bought in the Canary Islands more than 50 years old and brought to the peninsula in the 80s.
Having had the car in storage for so long, some people who didn't keep it used it and unfortunately misused the car.
I have to say that the car, after a visit to the workshop to renew the brakes, do the carburettors and some electrical issue, passed the ITV last month, which filled me with pride and enthusiasm to start using it.
Some pictures of my beautiful E9 (Ignore the emblem of 3.0 csi, my father put it to show off but it really is a 2800 cs, I will change them soon):
Now comes the problem I encountered......
Something that the electrician in my workshop did not want to face, was the burned cables that were under the steering wheel, they were all brown (earth). With a lot of patience and using the electrical diagrams in the handbook and those I found in this forum, I was able to isolate them and change them without having to disassemble the entire dashboard.
1.- Load Shedding Relay (39)
2.- ChangeOver Relay (38)
3.- Rear Fog Warning Switch (53)
4.- Warning Lights Relay (74)
6.- Heated Rear Window Switch (64)
Here I show you the complete cable with the names of the systems to which they were connected (sorry for my English in the descriptions).
I am not an expert in electricity but if I am very meticulous and little by little and with a lot of patience I have been able to change all the defective cables for new cables of 0.75 mm section, as indicated in the manual.
I have looked well in the forum trying to find a thread related to my problem with fuse No. 4, which I will explain below, since I do not want to repeat threads of topics that have already been studied by all of you.
The first thing to say is that when I brought the car home, fuse 4 had a 25-amp fuse instead of the 8-amp fuse that the manual indicates. This was done by some unconscious person who kept it for so many years without thinking about the consequences. . I think this is the reason for the melted ground wires. Once these cables have been replaced, and the correct fuses have been placed with their corresponding amperages as indicated in the manual, the following happens to me.
The car starts perfectly and when connecting the lights they all work perfectly (position, short, long and anti fog). The fuse only blows when the car is moving. I can be driving without turning on the lights indefinitely, but as soon as I turn on the lights, after a few meters, fuse Nº4 (8 amp) blows and the car dies and as soon as I engage the clutch, the car stops and when I turn the key the dash does not light up. The strange thing is that with the car stopped and started when the lights are connected, the fuse does not blow, the problem comes when the car begins to move.
I have thought about disassembling the fuse box and disconnecting the terminals that reach fuse Nº4 one by one and trying until I find which one makes the fuse blow when the car moves.
I have been reading this forum for years and the incredible experience that its members have, I hope you can help me, I always try to solve things without asking for help but in this case I have reached the limit of my knowledge and I hope that some kind soul can help me solve this mystery.
Thank you very much in advance to all of you, who without having written until now, have already helped me enormously in the past with the magnificent threads that currently exist.
Carlos
