starter solenoid

[Ranger1]

I replaced my starter solenoid (tiger cub) and when hooking the battery terminals back up the solenoid engages. put the old one back on does the same thing. I tried hooking up the battery with solenoid not attached to the starter and all seems well, however as soon as I snug it up to starter solenoid engages? Thanks for any help.

 

[EngineMan]

I replaced my starter solenoid (tiger cub) and when hooking the battery terminals back up the solenoid engages. put the old one back on does the same thing. I tried hooking up the battery with solenoid not attached to the starter and all seems well, however as soon as I snug it up to starter solenoid engages? Thanks for any help.

Take off the small wires and then see if it engages, it shouldn't, then check the key switch and any short in the wiring harness.