Wiring Pertronix Ignition

[Gareth91971]

Can anyone advise me on where I connect the two Black wires that come from the steering column under the dash that had the yellow wires for the Newtronic ignition module that is now removed. One yellow wire went to the positive side of the coil, and the other went to the module box. Do I take both the black wires to the positive side of the coil or should they connect to a relay behind the parcel shelf?
Advise greatly appreciated .
1972 MOD Stag
Thanks Gareth.

[Goldstar]

I didn’t have a black wire on my Newtronic. I’m not really sure what your set up is and why the ignition would have wires coming into the steering column. Are you sure they are ignition related. IIRC my Newtronic had white (12v switched) yellow (coil -ve) blue (earth)

My pertronix has (from memory) a red 12v which I ran to an ignition switched 12v on the fuse board and the black which goes onto the coil -ve.

I may have misunderstood your question but we need to understand what the wires are you’re asking about.

cheers
Paul

[SteveD]

I agree with Paul for the Newtronic wiring colours. see photo. As this is very old (but working fine at the moment, fingers crossed) I feel I need to carry a spare, is the Petronix the current recommendation?
Steve.

[Gareth91971]

Sorry if my explanation was poor, the contact breaker wires that came from the ignition on my Stag are black . I must have spliced into these with the yellow wire from the Newtronic box. One was soldered onto one of the black wires and went into the module, the other yellow wire went to the coil. Do I just connect the two black wires together and connect them to the positive side of the coil. I am assuming these black wires are from the ignition switch?
Thanks Gareth

[richardthestag]

Are you wiring in a newtronic Piranha system or a pertronix?

[Gareth91971]

I have taken the Newtronic Off and am putting the Pertronix on. I am assuming that the black wires were originally going to the points?

[jbuckl]

Originally a single black wire from the distributor when on points.

imagine that is long gone though.

sorry, but the question isn’t 100% clear.

try posting a couple of photos?

is the car mk1 or 2?

are you keeping ballast system?

[richardthestag]

I have taken the Newtronic Off and am putting the Pertronix on. I am assuming that the black wires were originally going to the points?

don't assume anything, any electronic ignition system will suffer badly if you connect it up back to front.

Volt meter will be of use here, do you have one?

[Gareth91971]

I will post some photos tomorrow if not sorted it. I'm thinking now that as I mounted the Newtronic box inside the car behind the parcel shelf the two wires I have now inside the car, that originally one went to the distributor points and the other one went to the coil. This makes me think that both the wires need to go through into the engine bay, the question I am asking is what do I connect them to?
Gareth

[Gareth91971]

Yes I have a multi meter just would need your guidance on how to check feeds etc

[Goldstar]

Ok if they were to feed a system you have taken out the sounds like you should just discard them.

The Pertronix has 2 wires. Red and black. Connect the red from the to an ignition switched 12v feed (some piggy back onto the fuel pump supply at the inertia switch, I run a new wire from the fuse board) and the black to the coil -ve and do away with the random black wires they sound like they are defunct.

Have you got a ballast or are you deleting that as well? I did when I fitted Pertronix and I used the flamethrower 2 0.6 ohm coil.

[richardthestag]

I will post some photos tomorrow if not sorted it. I'm thinking now that as I mounted the Newtronic box inside the car behind the parcel shelf the two wires I have now inside the car, that originally one went to the distributor points and the other one went to the coil. This makes me think that both the wires need to go through into the engine bay, the question I am asking is what do I connect them to?
Gareth

custom fit and no idea what we are looking at or what you have. sounds like a lot of non standard wires have been fitted.

My recommendation would be to pull everything out that is not factory original. Then when you are back at a factory setup then the installation shouldn't be difficult.

As far as advising on a custom setup blind with the risk of lunching a £200 pertronix setup? I'm out, sorry

[Gareth91971]

Thanks everyone for your advice. I don't think I have a lot of non standard wiring, I just think i'm not very good at explaining or working it out logically. I will trace the two wires back and see where they begin and work it from there. I fitted the Newtronic 25 years ago and removed the points and the wiring was standard so I should be able to work out what I did. Thank you for your warning Richard I won't connect anything before I test it, I don't want to have to spend another £200.00. Hopefully I will be able to report back when i'm back up and running.

[Gareth91971]

Update on fitting new Pertronix ignition. I have traced the random black wires that were cut into the yellow wire for the old newtronic module box. They originate from the immobiliser that I had to have fitted for the insurance back in 1999. It is a Selca IM3.22 . The question now is what to do with these wires as they are obviously an integral part of immobilising and there is no box to connect them to. I am pretty sure that the car won't start without them forming some kind of circuit. Anybody had experience of this as I need to ideally keep the immobiliser as it works fine and is required for the insurance.
Gareth

[jbuckl]

I recently and reluctantly agreed to remove an immobiliser from another members stag.

It had a cut in the thick red and white ignition wire, near the ignition switch…. 2 thin black wires.

It had a cut to the fuel pump supply and 2 thin black wires.
Behind the offside door pin switch in the a post…. But join was somewhere behind the (new) sill carpet, recently glued down (!)

Removal took a few hours. Mainly searching for the bodges.

Still needs more work to fully return to unbodged wiring.

Hideously low standards used to fit these items often, with totally unsuitable gauge wires, automotive vandalism really.

As for the column cowls…. Just taped on with tape…. Random screws shoved into cowl bosses, no threads engaged at all.

Pretty much immobilised the car 100%.

a stag with an immobiliser like that is to run away from really.

commercial rates to thoroughly remove and restore wiring could be very high indeed….. high hundreds maybe more.