Ballast resistor wire

[marshman]

Ian, glad you seem to have got it all straight.

Jonno, Good example!! and illustrates why I said " Of course there are also the sports, flamethrowers etc. etc. some of which are matched to the characteristics of the electronic ignition module, with these go with the manufacturers recommendations"

[StagJonno]

Ian, glad you seem to have got it all straight.

Jonno, Good example!! and illustrates why I said " Of course there are also the sports, flamethrowers etc. etc. some of which are matched to the characteristics of the electronic ignition module, with these go with the manufacturers recommendations"

Whoops - apologies Roger - Can't see how I missed that, but I did

[jbuckl]

Used to power the electronic ignition from the Inertia switch. But don’t anymore. Seemed to mess up the feed to the fuel pump.
having suspected the original resisted coil feed to have become compromised with age, I ran a new resisted wire to the coil (6v) from the (+ve ignition live) loom junction (behind the speedo) together with a new unresisted wire to the electronic ignition.
hate adding new wiring, generally but felt this was necessary.
new resisted pink wire wasn’t easy to find.

https://socforum.com/forum/forum/stag-owners-club/soc-forum/8912-ballast-resistor-and-resistor-wire

[DJT]

Incidentally, a local Stag owner recently sought my advice. He has a Mk1, c/w external ballast, with a Bosch coil and Accuspark ignition inside the distributor. He has been complaining of a misfire when hot and it is driving him nuts trying to sort it out. I found that the supply to the Accuspark had been taken from the ballast resistor WS wire (the one that comes from the tachometer). This, I thought, may be causing his problem, so I moved the supply to the ignition controlled (white wire) at the inertia switch as it was close and convenient. I did note that the inertia switch had been by-passed by use of a Scotchlock across both wires, but that is another matter. He has reported back that there is no improvement. Could the WS supply have damaged the ignition module? Could the ignition module be failing due to heat?

Dave

Anyone?

[mallardstag]

Could the WS supply have damaged the ignition module?

Unlikely (as it would have been driven by a lower than spec voltage) but possible

Could the ignition module be failing due to heat?

Yes it's possible.

It could also be many other things such as: spark plugs, HT leads, rotor arm, dist cap, coil, optical pick-up, ignition switch, wiring bad contacts...

He needs to eliminate them one by one.

[DJT]

Unlikely (as it would have been driven by a lower than spec voltage) but possible


Yes it's possible.

It could also be many other things such as: spark plugs, HT leads, rotor arm, dist cap, coil, optical pick-up, ignition switch, wiring bad contacts...

He needs to eliminate them one by one.

Thanks. Between us we have eliminated most of the above by replacement with new or known good.

Plugs, HT leads, Rotor Arm, Dist Cap - all replaced with known good spares.
Coil - new Bosch Red
Optical pick-up - not relevant as Accuspark fitted, not Lumenition.
Ignition switch - not checked yet.
Wiring bad contacts - eliminated most obvious. Still possible we've missed something. I had something similar a few years ago and it was the ballast wire connection to the coil. Fitted a new Lucar connection and problem solved.

We will persevere........

[KOY 23]

Dave.
I would replace the Accuspark, especially as it’s a hot running issue, cheap electronics don’t like heat, so nestled in the top of a Stag block is not ideal.

[DJT]

Dave.
I would replace the Accuspark, especially as it’s a hot running issue, cheap electronics don’t like heat, so nestled in the top of a Stag block is not ideal.

I’ve been in touch today. The owner has received his distributor back from The Distributor Doctor and his car is transformed. DD was not very complementary about the “rubbish“ that was fitted, but it’s fine now. Another happy Stag owner.