So I grabbed a greasy old Haynes manual that had a bunch of wiring diagrams for various models and they too only had yellow and gray wires. Other model years will not help. We also have collections such as wiring diagrams, fuse boxes, engine diagrams, circuit diagrams, engine problems, engine schematics, parts diagrams, replacement parts, electrical diagrams, repair manuals, transmission diagrams etc. There was no unused terminal on the back of the alternator and there's nothing electrical anywhere near it. These diagrams are subdivided into eight pages broken down by function for simplicity.
Beware that there are 3 banks of coils that have to be checked out also. I need the 1975 one. Find out what is not working first and trace it out. Most owner hacks use shiny shit wire from Radio shack. Once you have a refernec V and color lead. Not to overlook any possibility I noticed a wiring diagram falling out of the back of the book under chapter 13, Supplement. Just chekcing to be sure there are not interneal opens or u are not on an acccesy circuit.
Probably not a good thing. U shld still se V. If your car differs from the wiring and it is obviously stock, it may just have been that way. So I began hunting all of Brads wiring diagrams to find out what the disconnected wire went to. If either is missing, you will need to fine out why.
. The pages are integrated, meaning you may see the same fuse or the ignition switch on different pages because they are protecting different systems that run through these common circuits. Some whee hopfuly you will pick up the col lead to your coil. My former 1979 - also dead stock once upon a time - had these items switched. . Well, to confirm Fiat wiring weirdness, I was looking at the alternator, doing some recon before installing a wiper relay upgrade, and found a wire not connected to anything at the back of the alternator! Has anyone ever seen a wiring diagram for a 1975 124? It's probably best to download and print out the wiring key before trying to decipher the diagrams.
Try to focus on only one componet a time rather than do a emasse rewire. Diagram 1 Diagram 2 Diagram 3 Diagram 4 Diagram 5 Diagram 6 Diagram 7 Diagram 8. It also shows the gray wire, the one not connected to anything, and indicates that it goes to the voltage regulator! Fiat Spider 124 Wiring Diagram Manual Service This unique fiat spider 124 wiring diagram manual that offers with 13 pictures furthermore bmw x3 wiring-diagram moreover 1976 fiat 124 spider including 1981 fiat spider also with porsche 914 wiring-diagram along with 1973 fiat 850 spider furthermore 1980 fiat spider wiring-diagram as well as 1977 fiat 124 spider wiring-diagram along with 240z wiring-diagram furthermore minute mount 2 wiring diagram as well as 1982 fiat spider owner's manual moreover wiring harness wiring-diagram also with 1978 fiat spider wiring-diagram additionally porsche 356 wiring-diagram additionally 1979 fiat spider wiring along with alfa romeo spider wiring-diagram including fiat spider wiring diagrams moreover 1976 fiat spider moreover 1979 fiat spider wiring-diagram along with fiat 124 wiring-diagram 1979 including ford mustang wiring diagram. I don't believe the wires were connected properly in the old switch. Probably not a good thing. Or knows where I can get one? Wiring service fiat spider 124 wiring diagram manual furthermore along with fiat bspider b also with caprice additionally po moreover doblo coolant additionally headlight together with along with fiat dino bremse hinten including toyota celica repairmanual moreover corvette cooling fan relay location on corvette cooling fan relay regarding corvette horn relay location moreover Fiat Spider 124 Wiring Diagram Manual Comments and Responses on Wiring diagrams, engine problems, fuse box, electrical diagram, transmission diagram, radiator diagram, exhaust system, suspension diagram. I had a problem with a ignition switch in the other car and this switch was rusted so I replaced the ignition switch.
Hopefully the picture gallery below will be useful for you. They guy at Autozone said it Failed it's test, but I don't think he knew how to run the tester. Your email address will not be published. What I think I'm going to post something in the electrical section to see what's up with that. They can be hard to read if you are a newbie. This is what I have for the ignition switch wiring.
Make sure you understand the wiring and what should be hot when the car is off or on, for example: My friend's 1979 - a dead stock car except for the head - has an ignition switch that came from the factory wired like an early Spider - the wipers, defrost fan, and a couple of other things work when the key is off. Brad's schematics are a thing of beauty. I have had two of those, but never all three. Y should not read a voltate on a ground lead to ground. You need to go to the first coupling anc verify V is gettbg through to the corresponding lead. Well really, a giallo-rosso wire, but we are talking Fiat. Giallo-Rosso wire goes to the 30A terminal on the relay to the flux capacitor.
The wiring seems to be different from other model years. Would be willing to bet that if you traced it, and find where v is gettin in,U will clear up a lot of problems. This car has a Black with White stripe 8 gauge wire that goes from the powered stud on the back of the alternator to Fuse 10 farthest fuse to the right when laying on your back in the driver footwell. The previous owner never got the car started. Well really, a giallo-rosso wire, but we are talking Fiat. What I think I'm going to post something in the electrical section to see what's up with that.
You can check the coils by removing the one in question and appling a voltate to the coil side and lisnd for a click. There was no engine in the car when I got it, so I didn't disconnect any of the wiring. But I didn't get voltage at the coil. Not to overlook any possibility I noticed a wiring diagram falling out of the back of the book under chapter 13, Supplement. I have wiring diagrams for many of the Fiat Models, But not for my new project a 1975 Spider. That voltage is controlled by the iginition switch smart am i.
???? I've found the 1971 and 73 cars to be very similar for many of the systems without relays. Wiring color code or symbols, wiring harness, radio and audio wiring, circuit diagram, light switch wiring diagram. I have updated what some of the wires seem to do. I keep playing wiring roulette and can't seem to find a combination that gets of of the following at the same time: 12 volts at the coil, power to the normal car accessories headlights etc , and the starter to turn over when I turn the key. So I grabbed a greasy old Haynes manual that had a bunch of wiring diagrams for various models and they too only had yellow and gray wires. It turns over but with no spark.