While your starter solenoid is in the pic, it looks like it's missing the cable that runs from there to the starter (which is what I think you meant when you said there is no +).
As you can see in the pic above, there is a black wire with a red "box" on it that is connected to the positive terminal that the battery cable is also attached. That is what powers the fuse panel and that "box" is a fusible link. If you're getting warning lights, the chances are that that fusible link is still good. And if the solenoid is clicking, it's working and doing it's job. So you'll need that cable on the right that goes from the solenoid to the starter. If that cable is there and intact, then it could be that the battery has a low charge and isn't producing enough amperage to turn the starter. Or, if the battery is good, it could be a ground issue OR a locked up starter if you were able to turn the engine by hand.
As for the brakes, the sound you hear is the brake booster which sounds like it may be ok. The master cylinder is where the fluid is and should at least be checked to make sure there is fluid in it. Beyond that, I'd take a good look at the hoses to see if they're in horrible shape or if they're ok. You may need to pull the calipers off and take a C clamp to compress the piston to see if they're ok and remove the rotors to have them turned, but if the rotors don't look too rusted I'd just jack the car up and make sure that you're able to both spin the tires and hit the brakes to make sure they work for now. That way you'll be able to get it off the property and home where you're not so pressured to get all of this done, then fully go through the system. Of course we want it safe, but I'm sure you would be a lot more comfortable with everything done in your "back yard" vs being at someone else's house trying to get it out of their hair.
The throttle plates aren't necessarily an indicator of the rest of the engine, and if you were able to turn it by hand it sounds like the engine may not be hurt beyond the point of no return. I know we talked about a new carb vs a rebuild, so if you've purchased a new carb there's not a lot of reason to fuss with that one for now.
So I think if it were me, I'd keep plugging away to see if you could get that little V6 to run, then move on to the brakes and such. If it won't run, then it would be a waste of time to deal with the brakes right now.
As you can see in the pic above, there is a black wire with a red "box" on it that is connected to the positive terminal that the battery cable is also attached. That is what powers the fuse panel and that "box" is a fusible link. If you're getting warning lights, the chances are that that fusible link is still good. And if the solenoid is clicking, it's working and doing it's job. So you'll need that cable on the right that goes from the solenoid to the starter. If that cable is there and intact, then it could be that the battery has a low charge and isn't producing enough amperage to turn the starter. Or, if the battery is good, it could be a ground issue OR a locked up starter if you were able to turn the engine by hand.
As for the brakes, the sound you hear is the brake booster which sounds like it may be ok. The master cylinder is where the fluid is and should at least be checked to make sure there is fluid in it. Beyond that, I'd take a good look at the hoses to see if they're in horrible shape or if they're ok. You may need to pull the calipers off and take a C clamp to compress the piston to see if they're ok and remove the rotors to have them turned, but if the rotors don't look too rusted I'd just jack the car up and make sure that you're able to both spin the tires and hit the brakes to make sure they work for now. That way you'll be able to get it off the property and home where you're not so pressured to get all of this done, then fully go through the system. Of course we want it safe, but I'm sure you would be a lot more comfortable with everything done in your "back yard" vs being at someone else's house trying to get it out of their hair.
The throttle plates aren't necessarily an indicator of the rest of the engine, and if you were able to turn it by hand it sounds like the engine may not be hurt beyond the point of no return. I know we talked about a new carb vs a rebuild, so if you've purchased a new carb there's not a lot of reason to fuss with that one for now.
So I think if it were me, I'd keep plugging away to see if you could get that little V6 to run, then move on to the brakes and such. If it won't run, then it would be a waste of time to deal with the brakes right now.
But here's an illustration on how the solenoid should be wired:
) in a dozen days or so.
