How can I get alternator wiring diagrams?

Question edited for a lot more clarity., and toss in some CAPS.
Question moved to model category.

https://www.google.com/search?q=1994+4afe+ecm+wiring+diagram+pdf

https://www.google.com/search?q=1994+4afe+service+manual+pdf

https://www.google.com/search?q=auto+electrician+near+me

..

posted 3 times now and forget to say FRONT SENSOR>
right, not the Rear 02 sensor....?
and still no engine stated.!
nor country, (USA calif, usa FED, or canada)
strike three you are out.
sorry.
there are 3 engines,
based on all 3 engine schematics, my wild guess
is 7AFE engine. (the brown wire clue) 1,8L
4AFE (1.6L)
or 1ZZFE engine, DOHC 1.8L

posted now 3 times.
no engine stated (of the 3)
no symptoms stated. or job.
front or rear , oBD2 sensor not stated.
on your other post, i answred for all 3 engine
front 02 sensor B1S1.
all 3 engines, the ECU schematics on the 02 pins.

go back and read. your other posts.

you posted 3 times, and all 3 times same question
but if you read your other posts, bingo.
you never said the symptoms
nor said if it is the front or rear 02 sensor.
so i toss coin and land FRONT. B1S1.
i did answer for all 3 engines,
documented the
oxygen sensor B1S1 on all 3 ECU's

so , look.? at them.?

How is the field control wire to the alternator ?

A Corolla in snake skins..

my guess is you found out , all 02 use different color wires.
yes, that is true. why not name the new sensor makers name.
BOSCH?
but the harness colors are unique. on the car.
so when is this.???? 1.6L SOHC, or the DOHC?

here is a prizm link page, it shows how to get all this. data.

http://www.fixkick.com/PRIZM.html


no all things i life are free. sorry.

Rules of road. 02
there are 4 pins
the 2 heater pins are not polarized, can be swapped.
in fact BOSCH , is 2 black wires, here.
but what are the cars harness colors ok,, i spin 1.6L SOHC
for you, i log into alldata.com and look.
some cars have 2 kinds, Calif, or Federal, and if in Canada that too!

The 4AFE USA, 1995
a day late and a dollar short.
ok the 4AFE shows ONLY a 2 pin 02>so must not be 4A engine.
the 7A shows. 4pin. per below.
toyota color codes, here. (im iffy on toy codes)
BR -ground. O2 Cell minus pin 4 (brown)?
B-R 12vd to heater pin 2. (black & red stripe)
B , ox2 CELL plus, pin 1 (black?)
L-B , heater switched ground from ECU. pin1 (light blue?)

7afe

old post
no engine stated, ?? which one? 4AFE or 7Afe (TOY ENGINE)
the harness will not allow cross wiring injectors
how did you do that?
the #1 injector is on #1 cylinder
and on #1 fuel rail port.
the #1 cylinder on inline engines, the crank pulley end.
if you need wire colors, we can do that too.
or log in to mitchells DIY and read. that.
here is the 7aFE wires
B-O is 12vdc power key on, the ECU fires the 4 on right.

end old post day.

The diagram shows a capacitor between the regulator red wire and ground on some models. If your truck has that cap, you may want to check it or replace it. I don't see anything else on the diagram that could cause this behavior, unless there is a bad connection somewhere. If that red wire powers the field winding, a bad cap could be pulling down the voltage.

1. Disconnect the battery first.

2. Remove all the connectors on the back of the altenator.
3. Remove the screws holding the wires to the altenator.
4. remove the bolts connecting the altenator to the engien block.

Installation in reverse order.

hope this helps

It sounds like you have answered your own question here...? the thick wire from the alternator connecting to the starter terminal feeds electricity back to the battery though the starter cable when you are running... if you have a manual you can see for yourself in the wiring charts. Hope this helps...