Log in

View Full Version : Electrical Orientation of circuit breakers



krs09
03-01-2020, 12:17 PM
I hate to post this because it's a little embarrassing but I've been doing a fuse box clean up and now I forget exactly how the wiring goes to the circuit breakers. So, does anyone have a detailed pic or cheat sheet. Just wanna figure out what goes to post (aux and batt) and what color wire? Afraid of doing it wrong and melting something. Any help would be great!

Alex Brooks
03-03-2020, 04:01 PM
I hate to post this because it's a little embarrassing but I've been doing a fuse box clean up and now I forget exactly how the wiring goes to the circuit breakers. So, does anyone have a detailed pic or cheat sheet. Just wanna figure out what goes to post (aux and batt) and what color wire? Afraid of doing it wrong and melting something. Any help would be great!

did you get this figured out ? I could go take a picture of mine when I home if would like?

krs09
03-07-2020, 05:56 PM
did you get this figured out ? I could go take a picture of mine when I home if would like?

Days later... yeah if you could, it would be a big help. Don't wanna get my wires crossed.

DMC-81
03-07-2020, 07:17 PM
Sorry, I meant to reply at the time but got sidetracked.

Do these pictures help:

Before starter mod:
http://dmctalk.org/attachment.php?attachmentid=44732&d=1469219923

After starter mod:
http://dmctalk.org/attachment.php?attachmentid=49164&d=1488144838

Bitsyncmaster
03-07-2020, 07:53 PM
Note the 40 amp breaker has the two wires (those are your cooling fan circuit).

krs09
03-08-2020, 04:03 PM
[QUOTE=DMC-81;255211]Sorry, I meant to reply at the time but got sidetracked.

Do these pictures help:

Before starter mod:
http://dmctalk.org/attachment.php?attachmentid=44732&d=1469219923

After starter mod:
http://dmctalk.org/attachment.php?attachmentid=49164&d=1488144838[/QUOTE

Thank you and they do. Although the one thing I can't tell is what lines go into which side of the breaker, like which goes to the bronze (batt) post and which goes to the silver (aux) post. Sorry to be a PITA.

Bitsyncmaster
03-08-2020, 05:50 PM
The brown/orange on the 40 amp breaker is the power side. The brown/slate is the load side. Most cars I've seen both those wires are brown/orange. You would have to ohm out which one goes to the fan relay for the power wire.

DMC-81
03-08-2020, 07:22 PM
In addition to what Dave said, here is how my car is:

On the left hand circuit breaker, the brown and orange wire goes to the brass fitting (BATT) and the black and orange connector goes to the silver connector (AUX). You can refer to the AC wiring diagram in the first post in the thread below look for the circuit breaker in the middle top area.

On the right hand circuit breaker, the white starter mod connector (if equipped) is fastened to the brass two prong switch (BATT). There are three brown wires with black connectors that go to the other three of the four male spade connectors. These are for your 3 and 4 fan speeds. The live wire from the alternator goes to The BATT. The other 2 go to the AUX side.
Refer to the AC wiring diagram in the first post in the thread below look for the circuit breaker in the lower left area.


http://dmctalk.org/showthread.php?40-All-Wiring-Schematics

Michael
03-08-2020, 09:06 PM
http://dmctalk.org/attachment.php?attachmentid=44732&d=1469219923

After starter mod:
http://dmctalk.org/attachment.php?attachmentid=49164&d=1488144838

That's one damn fine looking relay compartment! So clean and tidy!

krs09
03-08-2020, 11:16 PM
The brown/orange on the 40 amp breaker is the power side. The brown/slate is the load side. Most cars I've seen both those wires are brown/orange. You would have to ohm out which one goes to the fan relay for the power wire.

Thank you so much. Funny you mention brown/orange lines. I have and brown/orange & orange/black wires. Alarming?

krs09
03-08-2020, 11:23 PM
In addition to what Dave said, here is how my car is:

On the left hand circuit breaker, the brown and orange wire goes to the brass fitting (BATT) and the black and orange connector goes to the silver connector (AUX). You can refer to the AC wiring diagram in the first post in the thread below look for the circuit breaker in the middle top area.

On the right hand circuit breaker, the white starter mod connector (if equipped) is fastened to the brass two prong switch (BATT). There are three brown wires with black connectors that go to the other three of the four male spade connectors. These are for your 3 and 4 fan speeds. The live wire from the alternator goes to The BATT. The other 2 go to the AUX side.
Refer to the AC wiring diagram in the first post in the thread below look for the circuit breaker in the lower left area.


http://dmctalk.org/showthread.php?40-All-Wiring-Schematics

This is spot on. You guys are the best. I got most of it back together but I'll recheck everything.62950