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Hallo an alle!
Der Bericht is in Englisch da er auch für jemanden anderen gedacht ist. Hoffentlich wird er für euch dadurch nicht minder interessant
This summer I had that chance to dedicate an entire month to our ’75 Fiat Spider CS1 US reimport. The biggest problem it had at back then was the entire electric harness. Therefor that was what I decided to dedicate my time on.
From all the projects I have undertaken on this car so far, this was certainly the most “ambitious” and at the same time the one I had the biggest respect from (so far…).
It should be noted: I do have some clue about electrics, but definitely not in combination with cars.
So naturally, the first thing I did was to do a lot of research.
At this point: THANKS TO EVERYONE WHO HELPED WITH MY MANY QESTIONS !!!
I decided to follow what most recommended (even though I initially intended it otherwise) and:
1: didn’t plan an entire “rip everything out” rewiring but stuck to cleaning up the mess and repairing the old harness.
2: printed the wiring diagram on 4x3 pages to have it in a proper size (with rasterbator.net) and started to trace all wires with the correct colors according to plan. This way I got to know the diagram and following individual lines got a thousand times easier.
The plan looking like this was recommended the most and I can totally agree to that!
(the quality is bad on purpose since I don’t know who holds the copyright…)
What I worked with: proper crimping tool (proper = CNC milled insert); Molex connectors; soldering where I considered it useful; toothed lock washer at every grounding; cleaning of most contacts; shrinking tubes; tons of zip-ties; reused many old cables and bought new ones for the lightning with 2,5 mm2 diameter; 30A Relays with sockets for the ones I added; etc…
Next thing to do was “open” the actual harness and “dive” into the mess. I guess, at this point I should mention all the “interesting” things I figured out about the car during the process as well as the ones I knew already:
1. the EGR-system has been removed by a previous owner, but all cables, relays etc. were still existing.
2. furthermore, a previous owner has added relays for the starter solenoid etc., but those were later substituted by a somehow more original wiring pattern by someone else (always by adding new cables – nothing was ever removed)
3. there is a Lada ignition switch installed
4. there is a new alternator without the neutral-wire (or whatever it’s called in English. It’s the yellow-red one)
5. the ignition mode relay was replaced by an ignition control module
Some impressions of how things looked before I started working / at the beginning:
First up I ripped out most of the interior (not the dash however). Not surprisingly the wiring was one big mess and it was impossible to properly follow a cable from A to B. So next thing up was to start removing all cables that were not connected to anything, as well as all removing all “dead” relays. Furthermore, all cables leading to exterior lights were removed, because I intended to redo that part entirely – it was extremely hacked up. After this surprisingly long challenge, things got clearer.
Der Bericht is in Englisch da er auch für jemanden anderen gedacht ist. Hoffentlich wird er für euch dadurch nicht minder interessant
This summer I had that chance to dedicate an entire month to our ’75 Fiat Spider CS1 US reimport. The biggest problem it had at back then was the entire electric harness. Therefor that was what I decided to dedicate my time on.
From all the projects I have undertaken on this car so far, this was certainly the most “ambitious” and at the same time the one I had the biggest respect from (so far…).
It should be noted: I do have some clue about electrics, but definitely not in combination with cars.
So naturally, the first thing I did was to do a lot of research.
At this point: THANKS TO EVERYONE WHO HELPED WITH MY MANY QESTIONS !!!
I decided to follow what most recommended (even though I initially intended it otherwise) and:
1: didn’t plan an entire “rip everything out” rewiring but stuck to cleaning up the mess and repairing the old harness.
2: printed the wiring diagram on 4x3 pages to have it in a proper size (with rasterbator.net) and started to trace all wires with the correct colors according to plan. This way I got to know the diagram and following individual lines got a thousand times easier.
The plan looking like this was recommended the most and I can totally agree to that!
(the quality is bad on purpose since I don’t know who holds the copyright…)
What I worked with: proper crimping tool (proper = CNC milled insert); Molex connectors; soldering where I considered it useful; toothed lock washer at every grounding; cleaning of most contacts; shrinking tubes; tons of zip-ties; reused many old cables and bought new ones for the lightning with 2,5 mm2 diameter; 30A Relays with sockets for the ones I added; etc…
Next thing to do was “open” the actual harness and “dive” into the mess. I guess, at this point I should mention all the “interesting” things I figured out about the car during the process as well as the ones I knew already:
1. the EGR-system has been removed by a previous owner, but all cables, relays etc. were still existing.
2. furthermore, a previous owner has added relays for the starter solenoid etc., but those were later substituted by a somehow more original wiring pattern by someone else (always by adding new cables – nothing was ever removed)
3. there is a Lada ignition switch installed
4. there is a new alternator without the neutral-wire (or whatever it’s called in English. It’s the yellow-red one)
5. the ignition mode relay was replaced by an ignition control module
Some impressions of how things looked before I started working / at the beginning:
First up I ripped out most of the interior (not the dash however). Not surprisingly the wiring was one big mess and it was impossible to properly follow a cable from A to B. So next thing up was to start removing all cables that were not connected to anything, as well as all removing all “dead” relays. Furthermore, all cables leading to exterior lights were removed, because I intended to redo that part entirely – it was extremely hacked up. After this surprisingly long challenge, things got clearer.
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