anyone have any diy or can give an pointers?

 

tap into your ecu's o2 sensors wire, in a ls ecu its the white wire/with red line going thru it, probably same as yours. its on the 3rd plug number #14,

Wires 1-14
Plug
[1 3 5 7 09 11 13]
[2 4 6 8 10 12 "14"]

7 wires over you will need a diagram i am too lazy to find it right now, but wire the power to your Radio power wire (Red), radio Ground to the all (Black) wire, and if you wish to see the light at night if it has a light in the back, hook it to the radio dimmer wire (Orange). I have a Sunpro, now also the gauge will constantly go thru lean - good - rich with stock o2 sensor. If you get a wideband sensor it will read steadily.