Where do these wires go?

[Mongolman]

Hi All,
I have a RJ77 which is a third world model (basically a left hand LJ78 Prado body with a 22r engine). It is very odd in that it is a 1992 but has a points ignition distrbutor and I can't find the right dizzy cap anywhere. Therefore I am thinking of switching the whole distributor to a signal generator type electronic ignition distrbutor. A friend brought me one from a 83 or 84 Celica. It has the vacum advance and only three wires but as I did not pull it I am not sure where the three wires go.

From the + side of the coil there is a brown wire going into a green conector and a yellow wire from the ignitor also to the green connector.

From that green connector there is a black and red heavy gauge wire and a small black wire. Where do these go?

Also there is a white and black wire from the small resister. Where does that go?

 

[fourwd1]

The thing with the Black and Blue wires is a condenser (capacitor) to help kill noise. Black goes to ground, and the Blue along with the heavy Black w/Red stripe wire go to the IG (Run position) on the Ignition Switch. If the Brown wire becomes the Black/Red-stripe wire, it's a sign I'm right.
On some the Yellow would be for the tach, on others its Black.

This should get you started.

 

[Mongolman]

Ok, just to confirm.

The brown wire from the + side of the coil does become the black/red stripe wire.
The yellow from the ignitor becomes the thin black which should be for the tach (don't have one on mine).
The condenser blue wire does join the black/red stripe and should make its way to the ingition (run position)
The condenser black wire becomes the white/black stripe and should go to ground

I think that all makes sense. Now I just need to look at what is in the truck and figure out how to replace it with this one as it has a bunch more wires. I'm sure I will have more questions

Thanks
MArlow

 

[Mongolman]

Next step

Ok, here is a wiring diagram from the FSM for both types. I am trying to replace the top Breaker Point type with the bottom Signal Generator type.
Fourwd1 has helped identify the wiring for the signal generator type.

Next question: the diagram of the Breaker Point type shows an ignition switch with two connections labeled IG and ST. While the signal genorator only shows one connection labled IG. Does this mean I need a different ignition switch?

Also the fusable link in the two diagrams is different mine being the RJ is AM 1.0 (whatever that means). Do I need to replace the fusable link with a different one? If so what one?

Thanks again
Marlow

 

[2ndGenToyotaFan]

This is from an 85 truck/4Runner/Hilux/Surf it may shed some light on your trucks setup.... Hope it helps, and if it doesn't, let us know what color and how many wires you have to deal with, so we can help figure it out.

 

[fourwd1]

Hey Mongol, it's near 11PM here (bedtime). I'll give a look tommorow. It's gotta be doable.

 

[Mongolman]

Hi Jerod, I should have saidit also does not have EFI just a carb (easy to fix in the desert I guess) so is a bit different than your diagram.

Fourwd1 - thanks Look forward to any input.

Marlow

 

[2ndGenToyotaFan]

Ah yes, I noticed, but the FSM I was looking at covers the 22R too.... and there was no different diagram for the carbed distributor..... So I figured they might be similar enough....

 

[Mongolman]

ok a bit more information

Ok I have a picture of the existing points type ignition (basically it looks like an older FJ60 coil with the large ceramic resistor on top) Anyway I will list the wires as I see them.

From the condenser one wire goes into the distributor to the breaker points and one goes over towards the coil but disappears into the loom so I don't know where it ends up (perhaps at the coil - terminal? looking at the diagram).

From the + side of the resistor a wire incased is a grey sleave goes into the loom and ends up I know not where but according to the book it should carry 12v when the ignition is at ON.

From the - side of the resistor a black/yellow stripe goes to the + terminal on the coil.

From the + terminal on the coil a small black wire goes to a blue connector then I thought it went to a ground (I need to check this as I am not sure it makes sense) and a heaveier BLack wire disappears into the loom (I am guessing it goes to the Ignition switch ST position in diagram).

Finally from the - side of the coil a black/red stripe also disappears into the loom (I am guessing that goes to the distributor).

I am not sure how much light this sheds on anything but I am trying to figure out how to change the wiring to swap in the signal generator type.

 

[fourwd1]

The pics and diagrams make it easy.
The heavy black wire now going to the resistor on the coil goes to the IG terminal on the Ign sw (according to the diagram).
That should go to the + side of the new coil.
The - side of the new coil should go to a black wire on the ignitor.
The new brown/red-black wire on the ignitor should also go to the + side of the new coil, as should the blue wire on the capacitor.

The "other" wire currently on the coil + terminal that you can't tell where it goes should be the one that in the diagram goes from the ST terminal on the Ign sw to the other (+ coil) side of the resistor.
From the 2 wiring diagrams it looks like you shouldn't need it any more, but I think you might.
The Ign sw in the points system provides 12V to the coil in the ST (start) position, then 12V thru the resistor in the IG (run) position.
If you look at the non-points system diagram there is 12V only in the IG (run) position. So how does the coil get 12V to fire up the motor in the ST position? My guess is it may the be the internal configuration of the switch. So if it won't fire up when cranking, that wire may need to be connected to the + coil terminal also.

As for the fuseable link, you may need to change that too.

 

[Mongolman]

Thanks fourwd1 That is helpful. I guess now I need to figure out which fusable link I might need.

Marlow