I need to ID the steering harness wires for start and run

Wisconsin_Snake · #1 (**permalink**) 10-02-2015, 11:30 AM

(I am wiring up a Fuel Injection wiring harness and it needs the 12 volt constant (while ignition is on) and the starter wire.)

I need to ID the steering harness wires for start and run. Here is the wiring harness schematic that I have.
I am pretty sure that #126 is for the starter.

Which is is constant run (even when the starter is being cranked)?
I thought it was #125 but the voltmeter tells me that when I turn the key to engage the start it goes to 0 volts.

Thanks

Close up so that you don't strain your eyes.

MotorcityCobra · #2 (**permalink**) 10-06-2015, 08:10 PM

Were you able to sort this out? Surprised that someone that knows what they're talking about hasn't responded. Is it feasible that with the CR harness that there is no continuous power from the start switch as you go from run position to start position?

Oddly I was just looking at a similar thing for my electric fuel pump, but I'll be using a low oil pressure switch where I need to run the power wire when the ignition switch is in run and the power wire when the ignition switch is in start so that either way the pump has power.

Wisconsin_Snake · #3 (**permalink**) 10-07-2015, 07:29 AM

I was able to get it sorted out, but I had to post it on a 55-57 Chevy website to get the answer. It appears that the wealth of knowledge that frequented the CR2 forum is dwindling..

I am at a point where I am ready to yank the CR wiring harness out.
Another issue that I have is that I am not getting power to gauges (to power the sensors) and who knows what else is going to work or not.

I truly believe that this car is now fighting me every step of the way on getting it finished.

moore_rb · #4 (**permalink**) 10-12-2015, 01:10 PM

Number 111 is the main 12V line that feeds the fuse panel

Number 126 is energized when the ignition is in the "cranking" position. This is the one you need for your EFI controller's cranking signal

Numbers 120 and 121 should have 12 volts with the ignition in the on position (non-cranking)- either one of them could feed your EFI's continuous 12V ignition signal, but it would probably be best to put the EFI's 12V feed off the load side of the IGN fuse.