Cahnged interior light globe. It sparked. Now no interior lights work and door locks dont work. Also now getting 4D on dash and car idling poorly.

Well, you forgot to turn off the lights (closed doors etc before fitting new one). Most likely blown a fuse/fuseable link (in cabin under dash and engine bay). 4D means the trip computer has lost power so needs re-programming. Hold the mode button for 2 seconds or more until it beeps. You then get 3.5. Again, press and hold the mode button for 2 seconds or more and it is all set.

Rough idling means you also reset the ECU so it will take some time to relearn things.

Thank heaps. One more stupid question. Does the fusable link/fuse under the bonnet just pull out? It is No11 and it has a yellow shroud around it and No10 fuse.

Hi Bartman. Not sure about that combination one. Other square fusable links (19, 20 etc) can be pulled out like a normal fuse.

On second thought. Check this thread (http://www.mitsubishi-forums.com/t36859-cental-locking-fuse-removal.htm). The gist of it is that it has little tabs at the base which needs squeezing.