TA/RA23 ignition barrel wiring

[DQIKST]

hey guys there is a single black wire that is thinner from the rest, any clues on what this is for??


iBZ

[TA-022]

bump tell us!

[Lambolica]

Where is it comming from on the barrel?

Cheers
Simon

[TA-022]

off the main barrell with the other wiring.

[ace]

I just looked at my TA22 and RA23/28 wiring diagrams and there shouldn't be a plain black wire...

How many are there in total? There should be 4.

[SIKTOY]

is it just black or does it have a coloured line on it

[TA-022]

dealeo is the donor vehicle had a RA40/60 ??? Column and barrel.

were using the barrell but wiring back to TA23 std dash plug.

The barrel (ra40/60) has an unmarked plain black wire. Everything else has IGN STA etc.

The dash plug has a black with red stripe.


from there atm were at a loss.


Soz shoulda mentioned all this earlier.

[rob1]

i may be way off here but, i have seen that most later than '70s toyotas have got 2 ignition wires. when you hook up say an immobiliser or some such and you want to immobilise. ign, if you cut one of the ignition wires the eng will stop, but the other ignition wire will not prevent the car from going, but instead will make you loose the dash warning lights etc.
Also sometimes this wire is thinner than the other ignition wire.

edit: so if this is the case, i would say the wire is redundant and you may be able to just shield it. (if what i'm assuming is correct).

[SIKTOY]

I was just looking at a wireing diagram and I think that it is for the igniter for the later model car

[TA-022]

yeah cause ive checked 70-82 and there is no markings for it in the diagrams from haynes.

im going to assume its not needed and see what happens.

[rob1]

i would still sheild it as it might power up once the key is turned to ign.
Good luck

[TA-022]

define shield? as in wrap it up etc so its not flapping in the breeze?

if so thats already done.

should have the car in question turn key tommorow fingers crossed and we'll find out

[Mos]

The barrel (ra40/60) has an unmarked plain black wire. Everything else has IGN STA etc.

You mean the labels on the ignition switch itself don't have a label for the single black wire? Sometimes this label is not located an immediately obvious space next to the contact...

Normally they're AM1, AM2, IG1, IG2, ST1, ST2, ACC on later cars. Don't remember ever seeing IGN but I could be wrong. Interrogate the pin with a multimeter in various switch positions.

The dash plug has a black with red stripe.

B-R can be a power supply to the ignition switch - not sure if I've seen it as a switched ignition output.

Mos.

[TA-022]

yeah some of the labels are positioned differently around the barrel pins.

problem is its an unknown column right now but looking at the RA23 barrel there
is no wire that goes to the dash plug black/red wire so i assume its redundant to my needs
at this point.

all markings on the barrell ive paired to a wire just this black one is unlabelled.

I think its all good but really wanted to get other opinions.

thanks all!

[o_man_ra23]

haynes general RWD manual states for 1980 RA40...

White - battery
Light Blue/Black stripe - Accessories
Black/Yellow stripe - Ignition
Black/White stripe - Start which goes to starter motor
Black/Red stripe - Start which goes to ignitor.

This is the only model they have shown with a 5 wire plug... all the others have 4 wires. I would guess that the Black/Red would be thinner than the Black/White, though could be wrong. Have you tried cleaning the wire in case there is a hidden stripe?? the red can be hard to see.

On RA23, it has:
White - battery feed
Light Blue/Black stripe - ACC
Black/Yellow stripe - IG
Black/White stripe - Start

So this makes the Black/Red out of place, and I would say you have the second start for an ignition module, which could be used as an added contact for the starter motor soleniod... but check with a multimeter before you join the 2 together.

Cheers, Owen