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LS – How to turn on the alternator

Since I completely removed the factory wiring harness- I discovered I would still need to engineer a solution to turn on the alternator.

Info

This post was originally published in 2018, and has been adopted to this static-site from wordpress. The build has since been retired.

Pin-out for the 4-pin Metri-Pack connection. Here is a pin-out for the 4-pin Metri-Pack connection I found at ls1tech.com.

Required parts to complete this

  1. 1x 470 ohm resistor.
  2. 1x Metri-pack 150 series 4-way connector → Delphi Metri-Pack 150 Series 4-Way Connector w/16-18 AWG Sealed Waterproof Set
  3. Reasonably thick gauge cable for alternator to charge battery.
  4. Heat shrink, protective loom, misc parts.

Step 1. Solder the resistor to a metri-pack terminal. Step 1. Solder the resistor to a metri-pack terminal.

Step 2. Use heat-shrinking around the resistor, and insert into the terminal. Step 2. Use heat-shrinking around the resistor, and insert into the terminal. NOTE- I have installed the connector into the WRONG PIN!!!!!

Soldered ring-terminal on 12-ga wire. I soldered on a ring-terminal to some 12-ga wire to carry the charging current.

Completed charging cable. Here is an image of my completed charging cable, and turn-on wire, all wrapped up with a sheath to product the wire. Note: again- the terminal is in the wrong socket in this image!

After installing the cable, and connecting the "turn-on" wire to a circuit only hot when the ignition is turned on, this project was completed.

A year later… on 9/26/19

Proper location for the signal wire. Proper location for the signal wire.