+12v with key on

[Built6spdMCSS]

If it will support what you are doing and not interfere with anything else.

 

[Baker7888]

If it will support what you are doing and not interfere with anything else.

??

 

[Built6spdMCSS]

Not sure what I said was vague... you want to use a random 12v wire without knowing what else it may go to.

 

[Baker7888]

Not sure what I said was vague... you want to use a random 12v wire without knowing what else it may go to.

All i know is it’s hot with key-on per my
test light. It went to the now deleted two prong oil pressure switch. My thought was since the switch has been deleted, the wire would stay hot-key-on all the time.

 

[ELCAM]

The brown power wire at the oil pressure switch goes to fuse number 2 top row on the right. Goes through a 20 amp fuse to the 12GA orange wire on the ignition switch, this circuit also powers fuse 4 and 6.

Pull the fuse and see if the wire goes dead, then you know what circuit you are using.

 

[Baker7888]

The brown power wire at the oil pressure switch goes to fuse number 2 top row on the right. Goes through a 20 amp fuse to the 12GA orange wire on the ignition switch, this circuit also powers fuse 4 and 6.

Pull the fuse and see if the wire goes dead, then you know what circuit you are using.

View attachment 207350

Awesome, thank you. I will confirm tonight when I get home.

Will this circuit be suitable for my needs or should I change it?

 

[ELCAM]

If I understand correctly this is being used for the control side of the relays. Bosch relays draw about 150mA to energize the coil. Running 4 relays will not draw a full amp of current. The circuit will have lots of excess capacity.

If all you run off this circuit is the 4 relays I would change the fuse to a 5 amp or smaller.

 

[Baker7888]

If I understand correctly this is being used for the control side of the relays. Bosch relays draw about 150mA to energize the coil. Running 4 relays will not draw a full amp of current. The circuit will have lots of excess capacity.

If all you run off this circuit is the 4 relays I would change the fuse to a 5 amp or smaller.

Yes you understand correctly. Thanks for the great information. So did fuse #2 only protect the oil pressure switch wire or are there others as well?

 

[ELCAM]

On the diagram I have the #2 fuse only powers the electric choke there is nothing else on the circuit.

 

[Baker7888]

On the diagram I have the #2 fuse only powers the electric choke there is nothing else on the circuit.

Ok awesome. I will verify tonight. I looked for this a while back in my haynes but they did not have it.