te72 charging system need help

[pr82rola]

Just bought a 82 sr5 te72. It's an electrical mess and i'm having issues with the charging system. I got the alternator tested and it was bad. but the wiring as been messed up before i got it.

B- wire directly from battery to alt. constant 12v
IG- connects to ignition switch, i dont know which color wire this shcould be??
S-i'm going to route it back to B coming from the battery
L- charge lamp n choke i have a blue wire connected to the blue wire on the relay by the driver side strut tower?? not sure if this is right either.

there is a round green plug with about 6 wires on it can someone please tell me where each wire is connected to i believe the ignition sw wire is black/yellow and it's on this plug

and can someone help me wire up the voltage regulator not sure which wires need to be wired to what on the voltage regulator.

sorry for asking for so much but my car is really an electrical mess. I need the car to get to school. any help or info is greatly appreciated

[BOBLOOK]

So did you buy another alternator ?

Sound okay but if you have an external regulator you missed the F field

B- wire directly from battery to alt. constant 12v
IG- connects to ignition switch, i dont know which color wire this shcould be??
S-i'm going to route it back to B coming from the battery
L- charge lamp

I think the previous owner probably have swap the external regulator alt for internal

I suggest if you don't have to much experience with wires to stick with the internal alt as it is easy to wire only 3 wires will make it work

L light
IG ignition
B battery

[BOBLOOK]

[pr82rola]

i havent mounted the alternator yet. i want to use an alternator with an internal regulator idk from which yr make n model alternator can i use.

what color wires are the ign sw, field, charge relay,

[mikealike]

i havent mounted the alternator yet. i want to use an alternator with an internal regulator idk from which yr make n model alternator can i use.

what color wires are the ign sw, field, charge relay,

i would mount the rx7 alternator, more power and 2 wire setup. or the saturn setup also a 2 wire setup.

[baldo]

What year would that be mike? I see they have more amps!

[BOBLOOK]

i havent mounted the alternator yet. i want to use an alternator with an internal regulator idk from which yr make n model alternator can i use.

what color wires are the ign sw, field, charge relay,

The color is stated on the diagram itself

[pr82rola]

update 1982 te72 corolla wiring colors and location
4wire internal regulator bought from autozone 60$

B terminal- battery+ terminal to B on the alternator

S- is another source coming from the battery with constant 12v this is a sensor wire which is used to maintain a certain voltage. (connects to battery + terminal)

L- connects to charge lamp circuit so your indicator in the cabin will tell you if the alternator is charging or not.
it's located by the igniter there is a round green plug with a yellow wire. the wires on the opposite end go toward the carburetor.

IG- connects to a black wire with yellow stripes located at the ignition switch. take the cover off the steering column the black yellow should be the soldered connection towards the top while facing you.

hope this helps i've been troubleshooting 3days now with this

[BOBLOOK]

update 1982 te72 corolla wiring colors and location
4wire internal regulator bought from autozone 60$

Can you snap an picture from the back were the connector plug

B terminal- battery+ terminal to B on the alternator

Heavy wire can't remember if it goes true an big fuse first need to check !

S- is another source coming from the battery with constant 12v this is a sensor wire which is used to maintain a certain voltage. (connects to battery + terminal)

correct

L- connects to charge lamp circuit so your indicator in the cabin will tell you if the alternator is charging or not.
it's located by the igniter there is a round green plug with a yellow wire. the wires on the opposite end go toward the carburetor.

correct yellow wire is the light. run that one to L altenator

IG- connects to a black wire with yellow stripes located at the ignition switch. take the cover off the steering column the black yellow should be the soldered connection towards the top while facing you.

Can but no need.......... the igniter round green plug have also an IG wire coming out. use that one.

Use an automotive tester to source for it.

hope this helps i've been troubleshooting 3days now with this[/quote]

[BOBLOOK]

I'll promest the pictures not sure if the wire colors are the same ?

Two plug alternator socket IG & L



Female regulator car harness socket i just toke the yellow wire to L

And the black/green for IG