Unable to start after reconnecting the battery

[jeep1943]

I had an accessory plug in the rear come loose and spark, so I disconnected the battery.

I have now reconnected and am unable to start the vehicle.

The only light that comes on at the dash is the door open light.

Any ideas where to start?

Waynne

[jeep1943]

Sorted.
Just learnt a valuable lesson in regards to diesels and batteries.

Terminal post cleaned, lead cleaned and done up nice and tight (was not overly tight when I took it off).

What is good to use to prevent oxidation of the battery terminals?

[spot01]

Sorted.
Just learnt a valuable lesson in regards to diesels and batteries.

Terminal post cleaned, lead cleaned and done up nice and tight (was not overly tight when I took it off).

What is good to use to prevent oxidation of the battery terminals?

Vaseline or grease.