15 replies to this topic

[nollyd]

Hi guys just a simple question for one who knows.what size wire do i need to run from fuse box to coin to bypass resistive wire.cheers.

[nollyd]

Sorry meant coil

[dklawson]

You specify wire sizes differently in Europe than we do here.  I would advise you to use a 16 AWG white wire for connection to coil (+).  You can go a bit smaller though.  My references at work indicate that you could use wire with an area of 1 square mm or larger.

[nollyd]

Ok cool.

[WiredbyWilson]

1mm thinwall is rated for 16A, so that would be fine with a 10A inline fuse.

[dklawson]

WiredBy... I am not familiar with using inline fuses on ignition wiring to the coil.  

[KernowCooper]

Nope nor me ? I never fuse the Coil Feed

[dklawson]

I have seen coil wiring fused on American cars but not British.  I guess if the inrush current isn't enough to blow the fuse it doesn't hurt anything... I just haven't seen this on a Mini.

[nollyd]

Mmmm.confusin me now guys.

[nollyd]

To fuse or not to fuse.also the restrictive wire bypass.ive come off a ignition live to the + on coil from unfused side of fuse box with the + to dizzy.disconnected restrictive wire then the - on coil to black to dizzy.is that ok or do i need to come off restrictive wire on back of ignition switch as i dont have the white wire in loom.

[dklawson]

If you are bypassing the resistive wire and installing a "standard" ignition coil, you would run a white wire from a switched terminal on the fuse box to coil (+).  Remove the white/pink resistive wire from the coil and tape off its terminal so it cannot touch earth.  There may also be a white/yellow wire on coil (+).  You can leave that in place or remove it and tape it off... your choice.  The white/yellow wire will not be contributing to the ignition system anymore.  If you have a tachometer, it will have a sense wire connected to coil (-).  That wire is typically white/black (in factory color code).  There is also a white/black from the coil (-) terminal going to the distributor (when points are fitted).  

[nollyd]

Ive got electronic ignition.the resistive wire removed.white wire to + on coil from unfused switched side of the fuse box.is this acceptable.

[nollyd]

The red from dizzy is also connected to + on coil.

[dklawson]

That is correct.  You have effectively bypassed/eliminated the ballast resistive wire and are now supplying 12V to coil (+).  The electronic ignition module's red wire will be connected to coil (+) so it gets 12V.  The black wire from the module will go to coil (-) and this takes the place of the short white/black wire that used to go between coil (-) and the distributor when points were fitted.  If you have a tachometer, its sense wire will still go to coil (-).

[nollyd]

thanks alot guys.