hef19898

Well-Known Member
Hi there,

so, I do have my problems with the new wiring harness. Especially with everything ignition and strater related, funny enough including the horns and beam lights as they share some of the circuits.

Anyway, I found an old Lucas starter lying around. I did order a new one anyways, but to test things I thought about installing that one.

Just how exactly do I wire this beats?

PXL_20250827_074342026.jpg
Small contact top right is marked ignition, no idea where the others are supposed to go...

Help, please? 😁
 
Hi there,

so, I do have my problems with the new wiring harness. Especially with everything ignition and strater related, funny enough including the horns and beam lights as they share some of the circuits.

Anyway, I found an old Lucas starter lying around. I did order a new one anyways, but to test things I thought about installing that one.

Just how exactly do I wire this beats?

View attachment 348570Small contact top right is marked ignition, no idea where the others are supposed to go...

Help, please? 😁
Small contact as said is ignition, then a heavy duty live from the battery to the bolt with no wire currently attached, earth is from the motor frame.
 
Do, ignition goes to the small one (white red if I remember correctly) everything brown or brown white, along with the thick main wire from the positive battery pole, to the screw without wires. The thick red wire is then the earth to the engine?

And the wire to the coil (white pink) goes to the top left contact?
 
PXL_20250827_074342026.jpg

1- Pos Starter Trigger from ignition switch.
2- Main Pos Power from battery.
Negative Power it gets through the body of the starter motor from the engine.

Edit - Oh and that red cable that goes from the solenoid over and not connected to anything obviously needs to be connected to the starter motor itself. Im guessing on that stud that is kinda out of frame.
 
Try
 

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I did try it, well I looked. And yes, I mixed up the wiring.

Couldn't install the spare starter, the bolts are round head for hex keys. The lower one is easy, the upper one almost impossible to get to. So I need a hex key that goes on a wrench.

So I'll just wait for the new starter, doing that twice is nothing I look forward to.
 
Starter arrived yesterday, even took a new Lucas one. Issue is, it has one less contact than the broken Magbetti one currently installed or the old Lucas spare I have... So, what now?

PXL_20250904_150918122.jpg
 
Just had a short call with my mechanic, he has no clue what the White-Purple cable between the coil and solenoid does neither. It does exist is each and every wiring diagram I have, and the old solenoids had contacts for it. As does the new harness... The old one as well, both harnesses using the same connector to coil as the one coming from the ignition. Weird...

Plan is to install the new starter, forget the wire between coil and starter exists, and see what happens. It didn't blow up so far, so I almost optimistic!
 
Just had a short call with my mechanic, he has no clue what the White-Purple cable between the coil and solenoid does neither. It does exist is each and every wiring diagram I have, and the old solenoids had contacts for it. As does the new harness... The old one as well, both harnesses using the same connector to coil as the one coming from the ignition. Weird...

Plan is to install the new starter, forget the wire between coil and starter exists, and see what happens. It didn't blow up so far, so I almost optimistic!
On some cars, the coil was a 9 volt item with a ballast resistor, the wire from the starter solenoid to the coil bypassed the ballast resistor so applying 12 volts during starting. Of course starter load means that the actual voltage would be lower.
 
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So, the new starter is in, quite a difference in terms of ooompf! And yes, she's starting again, running a bit rough, but that's an issue with the loaner carbs.

After changing the ignition lock, the starter and almost switching the relay, I realized tgat I am blind: right next to the relay you have the pumps for the washers, one of which is controlled by black-blue cable, a cable that is very close to the black earth wire for the relay... Guess what I did... Well, now that is working as intended.

One problem so, one I have to study a bit more, is the fuse box. Because that is also causing all kinds of issues. The new one, especially the fuse connected to the starter and the circuit controlling hirns, some warning lights and such, is quite loose, meabing those circuits are broken intermitently. I think I might have fixed the starter circuit, not sure, and I'll do the same with the other contacts. The spare fuse box I bought years ago is clamping much, much tighter around the fuses. Maybe I swap them, not sure yet...

Oh, and the reason the front wipers aren't working is simple: when I put some isolation in place after I removed the old wiring loom, well, I did manage to hide the connector for the wiper motor behind it. All sorted now. If everything goes well, to the garage she goes next weekend for the diffs, the exhust, the carbs and the oil cooler. TÜV / MOT end of September and Corsics mid of October! Fingers crossed!
 
Everything is fine by now, with three exceptions: oil and ignition warning lights don't come on when you turn the key and the tachometer does nothing. The warning lights worked a couple of days ago, and everything else is fine, ignition, oil pressure, oil temp sensor... Weird, maybe the lamps. All other dash lights are working as well.

The tacho did work before I replaced the complete wiring, almost certainly I wired it incorrectly, or pulled a connector or something.

And the right side turning signal, the one on the outer wing, stopped working as well. Either the lamp or a connector.

I changed the coil for one of those gold, Lucas style ones. And the spark plugs are now Luminition silicone ones. She starts like a charm, way better then before!

Almost there, almost!
 
So, follow up question: the brown-yellow wire should connect the warning light for igbition, I assume, to the alternator. Did I connect it correctly? I had to replace the connectors, maybe I mixed up something...

PXL_20250907_132953937.jpg
 
Diconect the brown/yellow first.

Turn ignition on & see if battery light is lit. If it’s lit start car up & it should go out.


Think the brown/yellow is for a rev counter. Do you have 1 fitted?
 
I think I found the problem, after contemplating to set her on fire and regretting not having sold her three years ago. Because the wiper isn't working anymore...

If I turn the key to position one, the white-red circuit should close. It doesn't, as it doesn't get any current. The last thing that is still a bit doubtful is the fuse box on the new wiring loom. So I guess that one will have to go... No amount of manipulating the contacts does anything, the fuses still are loose. The courtesy light work, only if you open the rear passenger door, but still!

If anyone has any hints regarding the exchange if a fuse box, I am all ears!
 

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