Help, zero power

[Guest]

Hey guys, I hope someone can point me
In the right direction. First off I am stupid. While putting the battery in I shorted something out. I had only hooked up the ground and the positive to the battery and didn't notice that the lead ground had got tucked under the battery. (Brain fart). Then I tried to start it. So now I have no power. I have charged the battery and tested it with a circuit tester. The main fuse is fine but as soon as I turn the ignition the power is gone. Could it be that it's too much draw on the battery and the battery is bad? Or is there some else somewhere? No lights or anything.

[almarconi]

What bike are you working on? Was the bike working before you put the battery in? Besides the main fuse do you have an ignition fuse? Do you have voltage at the battery?

[Dub-K113]

It's a 1977 Suzuki gs750. It was working before I put the battery in. I believe there is only one main fuse.. I only have a circuit test and there is power coming off the battery. I jumped the main fuse just to make sure there's power put it cuts off when I turn the ignition.

[almarconi]

Here is link to a 1978 750 wiring diagram (probably pretty close to what you have) http://postimg.org/image/j21xcxu7j/

There are two ground wires from the negative post, are both grounded. Try a different fuse or check yours with a meter set on continuity. Do you have voltage on both sides of the fuse? Is there voltage at the positive side of the starter relay? Is there voltage at the red wire at the ignition switch with the key on?
Start at the battery and trace the red power circuit. Look for broken wires and/or connections.

[Dub-K113]

Here is link to a 1978 750 wiring diagram (probably pretty close to what you have) http://postimg.org/image/j21xcxu7j/

There are two ground wires from the negative post, are both grounded. Try a different fuse or check yours with a meter set on continuity. Do you have voltage on both sides of the fuse? Is there voltage at the positive side of the starter relay? Is there voltage at the red wire at the ignition switch with the key on?
Start at the battery and trace the red power circuit. Look for broken wires and/or connections.

First off thanks for the help. Yes both are grounded. I have voltage on both sides of the fuse and voltage off the relay. I will have to get at the ignition switch next to check it.

[hannibal]

It's a 1977 Suzuki gs750. It was working before I put the battery in. I believe there is only one main fuse.. I only have a circuit test and there is power coming off the battery. I jumped the main fuse just to make sure there's power put it cuts off when I turn the ignition.

What cuts off when you turn on the ignition?

[tkent02]

This happens sometimes when there is corrosion on the battery terminals, or perhaps some of the other terminals in the big wire going to the solenoid and starter.
You will hear the starter hit, then nothing and there's no voltage anywhere. I don't know why it happens but sometimes it does.
Try disconnecting, cleaning and reconnecting everything to do with the starter circuit, it might help.

[Dub-K113]

Basically all current. When I hold a voltage tester at or after the main fuse it cuts out when the ignition is turned on. As well no lights when the battery is in and has power.

[almarconi]

Is there voltage going to the ignition switch? When you turn the switch on, is there voltage at say the headlight? Does your bike have any gauge lights, do they illuminate with the key on?
Where you able to trace the red power wire, are all the connections solid?