Ford electrics latest update.

 I've mentioned Fords electrical "issues" before. Last week my other rear light bulb went. This time forewarned after last times problems of neither the computer or the manual matching the bulb in use I took the bloody bulb in with me to buy the replacement.  Thats when it got even odder.
 You see the near side rear bulb (harder to get at than the off side) is a different bulb again, this one is the same as the manual, and different to the offside rear bulb.
 Now the normal reason for this situation is a vehicle has had accident repair and a newer part fitted.... except my brother knows the car and it's history, it's not had a bump or light replacement.
 It's come from Ford like this.
 I give up.