Illumination wire

[vywgn]

Which 'dash loom'? Thanks

The main loom. Best place to tap into is the hud/headlight plugs, as both plugs have the yellow wire join together

 

[dassaur]

According to the Chev ss Manual online, fuse 19 is "Steering wheel controls backlighting". Use an Add a fuse? Doubt what this fuse does would change when Holden installed the box on the wrong side of the car...

Great call. This was it exactly. When illuminated sends around 6v. Thanks.