Help identifying wire harness 1995 D1

[kramirez230]

I've been trying to troubleshoot a radio issue and dont know what this wire harness is for..
The vehicle is a 1995 Disco 1.

I'm rewiring the stock amp so it looks a bit messy but the cable bundle coming from underneath the center counsel has a wire group going to the amp, one going to the diagnostic box and a third unknown, the one pictured one...

Just as an fyi... if you can't already tell, I'm not overly technical and am learning as I go...

Thanks,

Kevin

 

[robertf]

service reminder timer module

 

[boxster]

I think this will help

 

[kramirez230]

Thanks guys!!!