Electrical Problem....help..

[Mogui]

The Fuse for the (combined) left hand front and rear side lights and interior lights keeps blowing as soon as I turn my sidelights on. Can anyone help me out as to why?? Off the top of my head its a 10A and its Fuse No. 13 , ive tried replacing it and it blew, I then tried a 15A and that blew. The book says to use a 7.5A, there was a 10A in it when i bought it??? Also is this the fuse for the rear number plate light as well cos that isnt working either??

I have recently changed my cylinder head and in the procees disconnected injectors and stuff, if that may have had any effect on it??

I have a 92 SRi model. Cheers guys.

[epo]

have u checked to see that ur sidelights wires r still conected to the actuall bulb holders as there could be a stray live wire touchin an eart :?: