What are these wires for?

[Kep1a]

I took a plate off to mount a diverter valve. The connectors were hidden between the plate and gas tank.

 

[/pine]

Self destruct button ?, ejector seat ?...Seriously it looks like an auxiliary power connector for lights or whatever...appears to maybe have it's own fuse link?

Have you looked for a wiring diagram ?

 

[Midniteoyl]

Probably a connection for when you have a cab?

 

[ptsg]

The one connector with more wires is mostly likely for a trailer plug. Chances are that it's wired for the Euro trailer plug.

The other ones could be work lights, beacon or license plate light.

 

[Kep1a]

I will check for trailer wiring and try to confirm work light suggestion.