HELP - Coil low tension wires

[simonhorton]

I'm putting the loom back in my car
Please can someone tell me or even better put a photo on here showing which wires go to which terminal on the coil
Positive and Negative terminals

I know the distributor wire goes on the Negative terminal
Thank you

[Toledo Man]

The positive wire is an ignition-fed live which could be either ballasted or unballasted. Take a resistance reading across the LT terminals of the coil with nothing connected. IIRC, 1.5 ohms is a ballasted coil so you will have 6v on your live feed and a bypass wire with 12v present only when the starter motor is cranking the engine. An unballasted coil will be 3 ohms so you will need a 12v ignition live feed. I can take a photo of mine when I get home from work.

[Jon Tilson]

Simon in your case you have an early Sprint I believe and I cant remember if they had the separate ballast resistor or one
in the loom from the coil plus to the switch. So the following assumes you have the ballast in the loom...

Colours fade too over time....but on the coil plus you should have a 2 wire terminal in white with a red trace on one and maybe a yellow
on the other? This goes to coil plus. The red one is from the starter ballast bypass....the other comes from the switch.

On the coil minus you may also have a lead with a light grey trace which goes to the tachometer.

If you intend fitting electronic ignition read the wiki article here...

https://dollywiki.co.uk/wiki/Ignition_b ... ss_removal

Jonners

[simonhorton]

Thanks for the reply chaps

If someone could add a few photos , that would be great

Many thanks
Simon

[MIG Wielder]

Hi Simon, Here is a piccy of my 1850 modified set-up for a Lumenition Ignition system.
For your standard system ignore the red wire on the coil + . It won't be there.
Also ignore the purple wire on coil negative. Ditto.
You will have 2 wires on one connector tag on the coil neg; One should be White / black tracer going to the distributor. I think that on the Sprint there is an in-line connector from the points. The other will be White / slate grey going to the rev; counter. TBH both of these look cream/ grey on mine. My White / black one is sleeved out of the way behind the distributor.
On the + side you can just see the plain White / Yellow wire running behind the 2 wires on the neg; terminal round the back of the H.T. lead and being connected to the coil + terminal nearest the bulkhead. Mine looks cream coloured all round !
On the lower RHS of the piccy you can see the unconnected Pink / white wire from the starter solenoid for the ballast circuit. This will go the coil + terminal on the front connection, where my Red wire currently is.
HTH,
Tony.

[Toledo Man]

As promised, here's mine.


Hope it is of any help.

[soe8m]

Here's a picture of my coil. Maybe of more help.

Jeroen

20160408_200523-1.jpg (18.61 KiB) Viewed 1099 times

[Jon Tilson]

Is that a Brazilian one?

Jonners

[soe8m]

100% Dutch. And with 9 already sharper with words than her dad. She likes the dolomites so forum beware.

[Toledo Man]

The next "scary daughter"? I'll bet she speaks better English than some of us!

[GTS290N]

Here's a picture of my coil. Maybe of more help.

Jeroen

20160408_200523-1.jpg

I had one of these, it worked very well indeed, always a pleasure.
When it got older it really started playing up and behaving strangely, and after a few more years it matured into really a delightful thing.
I also had a blue Bosch coil same as the picture, it's on a Sprint now.

[Mahesh]

Mine from when I put the magnetronic in.

[Mahesh]

Current one

[oily66]

Well I am from Yorkshire

[Mahesh]

Yes, those do ignite well