installing a new gas cooker?

Hi, i have just installed a calor gas oven in my caravan + hob, it appears I've mist some thing out on the oven, which is a Vanette GG2200 (S) Mod 059040850 HOB IGN.
The hob is working fine there is no ignition on the hob i just use a match, my problem is with the oven no gas is come through when you turn temperature knob however there is a wire which runs from the burners to a contact switch on the door, and the wire coming from the switch needs to be connected some where.
also is this wire that's not connected causing the gas not to flow regards Rob