Hello guys, here is a little write-up on how to connect the Spartan 2 WB to the factory O2 harness using the O2 plug.
I might create a how-to on "how to MicroSquirt your car step-by-step" because I felt a little bit at a loss with all the cool info I could find everywhere on this forum and YT, don't know if the admins would approve of it though
Anyway, first things first:
- I checked the awesome diagram from tmoss posted above, even though my Fox is an 87 and the wires are a different colour
- I checked for continuity on the harness connector using a basic multi-meter to validate that pins 29, 43 and 49 are correctly connected
- I then cut the O² connector and verified continuity again to label its wires properly
- Even though I am installing a MicroSquirt, I've followed the Pimp manual for installing the Spartan and labeled the wires accordingly
- The most time-consuming part of this installation is finding a way to route the Spartan wires to the OEM harness: as it happens, I installed the Spartan under the driver side fender since I'm doing a wire-tuck (at least I'm trying)
- Next, the wires from the WB is routed through the K-member
- I ended up routing the Spartan wire through the windshield washer reservoir hole
- As I can't solder properly, I'm using these awesome Posi-lock, which will be replaced by Posi-seal for weathertight connections
Hope these pictures will help anyone who wants to connect a Spartan through an OEM connector but before connecting everything, I need to wire in the fuse that came with it and test the third wire (ignition run, I believe KOEO is sufficient to test for voltage on this wire)
I might create a how-to on "how to MicroSquirt your car step-by-step" because I felt a little bit at a loss with all the cool info I could find everywhere on this forum and YT, don't know if the admins would approve of it though
Anyway, first things first:
- I checked the awesome diagram from tmoss posted above, even though my Fox is an 87 and the wires are a different colour
- I checked for continuity on the harness connector using a basic multi-meter to validate that pins 29, 43 and 49 are correctly connected
- I then cut the O² connector and verified continuity again to label its wires properly
- Even though I am installing a MicroSquirt, I've followed the Pimp manual for installing the Spartan and labeled the wires accordingly
- The most time-consuming part of this installation is finding a way to route the Spartan wires to the OEM harness: as it happens, I installed the Spartan under the driver side fender since I'm doing a wire-tuck (at least I'm trying)
- Next, the wires from the WB is routed through the K-member
- I ended up routing the Spartan wire through the windshield washer reservoir hole
- As I can't solder properly, I'm using these awesome Posi-lock, which will be replaced by Posi-seal for weathertight connections
Hope these pictures will help anyone who wants to connect a Spartan through an OEM connector but before connecting everything, I need to wire in the fuse that came with it and test the third wire (ignition run, I believe KOEO is sufficient to test for voltage on this wire)