Circuit breakers wiring

[DrWin]

Hi guys,

Having just had a foray into the relay compartment got me thinking about something else: Circuit breakers.

Am I right to assume that they aren't on the wiring diagram?
If so, how do I know if they are connected correctly?

This is what it looks like atm.

66316

I think to blower motor breaker is correct, after all, that's only one wire in, one wire out.
I don't know about the cooling fans breaker, as far as I can tell I've got two ingoing and two outgoing connections. Is this right?

66317

The door lock circuit breaker is connected to the third brake light, that came with car, which has inline fuses on both power and ground. Other than that, it looks allright. But is it?

[DMC-Ron]

The three thermal breakers are shown on the wiring schematic. I'm not sure this will sort out your specific wiring. Both the fan speed breaker and the door lock breaker were sometimes used as a source of direct battery power. for modifications and other additions
Ron

66318

[Bitsyncmaster]

The radiator fan breaker has two wires. The blower breaker has the extra wires, one is the starter recall change. The breakers have the current rating printed on the side so make sure yours are correctly rated.

[Ron]

I think to blower motor breaker is correct, after all, that's only one wire in, one wire out.
I don't know about the cooling fans breaker, as far as I can tell I've got two ingoing and two outgoing connections. Is this right?
No, as Bitsy said, the cooling fans breaker (40A) has two wires (Black/Orange and Brown/Slate, OR, Black/Orange and Brown/Orange, depending on factory change).
The blower breaker (30A) has four brown wires. To sort them out (stock) you can:
Remove all four brown wires.
Remove the 3rd and 4th speed relays.
Check for continuity from each of the circled terminals below to the brown wires at the breaker.
Place the two brown wires that have continuity on one side of the breaker (30A).
Place the remaining two brown wires on the other side of the breaker.

66322

The door lock circuit breaker is connected to the third brake light, that came with car, which has inline fuses on both power and ground. Other than that, it looks allright. But is it?The door lock breaker should have a brown wire on one side and the red wire from the lock module on the other side.
I can't see the rest...no idea why there would be a fuse on power and ground.

[DrWin]

The three thermal breakers are shown on the wiring schematic. I'm not sure this will sort out your specific wiring. Both the fan speed breaker and the door lock breaker were sometimes used as a source of direct battery power. for modifications and other additions
Ron

66318

Great thanks - electronic literacy increased by a smidgen. Circuit breaker = thermal breaker. :)

[DrWin]

The radiator fan breaker has two wires. The blower breaker has the extra wires, one is the starter recall change. The breakers have the current rating printed on the side so make sure yours are correctly rated.

Would you recommend increasing their size above what was/is stock? I think I saw that on deloreango.com, that they recommended larger ones. (?)

[DrWin]

No, as Bitsy said, the cooling fans breaker (40A) has two wires (Black/Orange and Brown/Slate, OR, Black/Orange and Brown/Orange, depending on factory change).
The blower breaker (30A) has four brown wires. To sort them out (stock) you can:
Remove all four brown wires.
Remove the 3rd and 4th speed relays.
Check for continuity from each of the circled terminals below to the brown wires at the breaker.
Place the two brown wires that have continuity on one side of the breaker (30A).
Place the remaining two brown wires on the other side of the breaker.

66322
The door lock breaker should have a brown wire on one side and the red wire from the lock module on the other side.
I can't see the rest...no idea why there would be a fuse on power and ground.

Got it, thanks. I'll leave that for now and sort out a different arrangement for the 3rd brake light later.

[Azar]

Hello, the photo is from the 1982 DeLorean. My 1981 doesn't have this part on the left with the wire. Is this also a circuit breaker? What is it for?https://uploads.tapatalk-cdn.com/20210516/35d62353fe8f376fb0dbc478baed513b.jpg

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[Ron]

It's a capacitor. It keeps electrical noise from the switch from getting into the radio.

[Azar]

It's a capacitor. It keeps electrical noise from the switch from getting into the radio.Thanks Ron, as usual for the great advise. And sorry for hijacking the thread....

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