Loom question

[Cloggy Saint]

What's this plug for? It's on a loom from a b25 but i don't recall seeing it on my b20 loom. It's in the same area as the battery connector and coil wires, both facelift cars

[maxfield]

Lambda sensor plug. Guessing the B20 loom is an earlier loom?

[Cloggy Saint]

Yep, b20 from '89 and this one from '90. The b20 has a lambda sensor, was the connector changed on later models?

[Brianmoooore]

Earlier loom would be pre '87. '89 and '90 looms should both have this plug, which fit underneath the front battery tray.

[Cloggy Saint]

Thanks, that's probably why I've never seen it.