D P, to use the keyboard connector take a look on here. To use the power on pads, use the attached image to find those, shorten the pins out by using a small screwdriver. Be careful to not shorten anything else. Hope this helps, good luck.
Power issues, power adapter dead, no power
1. Check for damaged pins or magnetic debris on MagSafe power adapter. If pins are okay,
reseat power adapter connector and make sure it is fully inserted. Refer to Knowledge Base
articles 303566 “MacBook Pro: Troubleshooting MagSafe power adapters with stuck pins” and
302461 “Troubleshooting iBook, PowerBook G4, and MacBook Pro power adapters”.
2. Remove any connected peripherals.
3. Try known-good power outlet.
4. Remove battery, and remove AC power.
5. Press Caps Lock key to see if light on key comes on. If it does, hold power button down for six seconds to shut down the computer and restart.
6. Reset PRAM (Press the power button, then hold down the Option-Command-P-R keys until you hear the startup chime at least one additional time after the initial startup chime).
7. Reset the power manager. See Knowledge Base article 303319, “Resetting MacBook and MacBook Pro System Management Controller (SMC)”.
Warning: Make sure you do not hold down the “fn” key when resetting the power manager. Resetting the power manager means you will also need to reset the date and time (using the Date & Time pane of System Preferences).
8. Test each RAM slot individually with known-good RAM. (The computer should still start with only one known-good DIMM.)
9. Remove AirPort Extreme Card.
10. If computer starts on battery power only, try replacing MagSafe board with a known-good MagSafe DC-in board.
11. Verify cable connections and check cables for damage.
12. Verify power button is connected properly to logic board, if power button is not functioning correctly or damaged, replace the top case.
13. Replace logic board.