If you can start it by jumping across the solenoid, you have a problem in the wiring or the switch itself. If you do not have a multitester, this could be a very difficult problem to diagnose. Take it to a mechanic.
See the answer to 2000 Bonneville Neutral Safety Switch Location. Had the same problem and that was my fix. You can install a separate Start Button in the Starter circuit to start the car also.
show me where the starter relay is are on a 2000 Pontiac Bonneville
I have to jump start my Pontiac Bonneville 1988 everyday I drive it why is that.
No switch. Check the relay for the fuel pump.
No try the starter relays first you will find them in the front driver side
might be starter relay, or the crank circuitry from the switch or to the starter from the relay. I would trace back from the starter to the starter relay back through the neutral safety switch to the ignition switch.
could be the master fuse under the hood. is there any electrical?
Usually when a starter solenoid/relay switch is bad, you will hear only a click and the starter will not spin (crank).
the neutral safety switch is thrown
Either your starter solenoid, if not check the neutral safety or clutch safety switch.
When opened by the starter switch, it sends electricity from the battery to the starter motor to start the car.
It probably is the key switch.