DIYPNP wbo2 wiring question (0v-5v) wire. 92 1.6
 

I have a DIYPNP purchased off this site that I'm trying to connect a Innovate MTX-L wbo2 to. Car is 92 1.6 (non-turbo).

The 12v, ground, dimming (headlight 12v), and the brown simulated narrowband (to 2N/ pin 23 on DB-37) connections seem very straightforward.

My question is what to do with the 0v-5v (yellow) wire?
-Connect to MS at the same place as the narrowband (leaving the brown wire disconnected from the wbo2)?

If not this, my MS came with a db15 connector/hood and 6' of wire. Do I solder the wire to pin 15 and connect this to the 0v-5v yellow wbo2 wire?

Thank you!

Attached is a picture of the db15 connector parts/wiring for visual reference.

I went ahead and connected the yellow wire (0v-5v) from the wbo2 to the stock o2 wire and everything's reading fine in tunerstudio.

Not sure on purpose/function of the db15 connector, buuuuuut whatever.

Feel free to lock/delete the thread. I looked for a way to delete it but didn't find one.
¯\_(ツ)_/¯

The DB15 is a spare connector to allow non-stock functionality without modifying a stock wiring harness.