OHHH! You're jumping the solenoid contacts. That's what the solenoid does internally after it engages the flywheel. You're actually bypassing the solenoid that way so it isn't going to engage; just the starter motor will spin, and your jumper wire is going to have to pass about 100 amps. If you want to jump it that way, you have to jump from the large battery terminal to that brown wire right next to it. That will activate the solenoid to make it mechanically engage the flywheel teeth, then the movable plunger will switch the high-current contacts to activate the motor. The engine will crank that way.
A much easier way is to bypass the starter relay, either by jumping terminals 30 and 87 together or by removing its cover, reinstalling it that way, and squeezing the movable contact.
Thursday, August 9th, 2012 AT 12:36 AM