Try an ignition switch.
Starter Ignition Neutral switch
Starter solenoid.
If your 1999 Ford Mustang cranks but won't turnover you may have a problem with the starter, the solenoid, or the alternator.
The starter solenoid on a Honda Element is integral to the starter. It cannot be replaced without replacing the starter as well.
Starter solenoid? Follow the + battery cable - connects to solenoid - may be at the inner fender wall
The starter solenoid is located on top of the starter. It is the small cylinder attached to the starter. It is a part of the starter which can be replaced/repaired independent from the starter itself.
The starter solenoid is close to the battery of your car. Follow the red battery cable to reach the solenoid. Use your car's manual for any help.
I DO BELIEVE THE SOLENOID IS MOUNTED ON THE STARTER AND YOU WOULD HAVE TO REPLACE THE STARTER TO REPLACE THE SOLENOID remove the starter and take it down to your local auto parts store. they can bench test the starter and give you the proper solenoid if it needs to be replaced.
check your wiring,also check to see if theres power leaving the relay.
Never disconnect a battery while an engine is running!
The starter solenoid can be replaced by removing the wiring harness. Remove the retaining nuts. The solenoid will come off. Reverse the process to install the new solenoid.
may be on top of the starter and replaced with same. Follow the + battery cable it will connect to the solenoid