10-28-2010, 08:48 AM
Join Date: May 2005
Location: Chantilly, VA
Total Cats: 1,356
you should easily be able to add it into the proto area.
you need a tip125 or alike.
a 1N4001 Diode (use one from the 3 wire IACV circuit)
2.2K resistor (left over from R14)
220ohm resistor (two leftover 100ohm in series)
Put the tip125 through 3 separate proto area holes. Remember, the vertical rows all connect, so be careful how you position it.
Run the 220 ohm resistor from the fuel pump hole on the PCB, to the left most leg (1) of the TIP120.
Jump the left leg (1) with the right leg (3) using the 2.2K resistor.
Run a wire from a spare 12v hole to the right leg (3).
Put the diode across the middle leg (2) with the right leg (3), banded side goes towards (3).
Run a wire from the middle leg to 1C on the adapter board.
the end. You are sending out 12v not a ground, so this High Side Driver must be built. The new V1.5 board has this circuit built within the PCB.
Last edited by Braineack; 10-28-2010 at 02:54 PM.