Re: Connecting a Remote Starting Switch
Find the starter solenoid.
There's two large posts (one leads to the starter motor, the other to the battery (+)), and two smaller ones (one with 12V from the keyswitch, the other with a black ground wire leading to the engine block).
Connect one of the switch leads to the large post on the battery side and the other to the +12V small post.
Be aware that if the second switch alligator clip is touching (or even just very close to) the engine block (or anything connected to the block), you'll have a direct short to ground and things will heat up in a hurry.
When you close the switch, it'll actuate the solenoid just like turning the keyswitch to "start". You probably know this, but with the keyswitch in the "off" position, spark is disabled. The starter motor will spin but the engine won't start. Leave the keyswitch in the "on" or "run" position to start the motor.
If you have a *heavy duty* switch you can jump (bypass) the solenoid by moving the switch lead from the small solenoid post over to the other large solenoid post, or even directly to the starter motor (+) post. If you connect directly to starter, be aware that the starter housing is grounded to the engine block, so if your alligator clip is touching the housing (or close enough to arc), you'll have a direct short to ground.
The starter motor pulls a lot amps when it's cranking the engine, so don't jump the solenoid unless your switch is designed for starting an engine, and your wire leads are heavy gauge (10 ga ought to do it).
Don't get in a hurry; double check your hookups before closing the switch.