fuse No. 13 - Anyone know what it does?

[robhol]

As above further to my fuel pump problem I've found that the 20A fuse in my chim keeps blowing - does anyone know what it is for??

[robhol]

the engine turns over and there is a clicking under the dash, but it won't start. I'm guessing it's either ignition or fuel pump related but as I don't have the book of words for the beastie I'm struggling - have tried a dozen local (rawtenstall) autoelectricians but as soon as I mention it's a tvr they all run for the hills!! If I can find out what part fuse 13 serves then I may be on my way to finding out why it blows the fuse every time.

[robhol]

My chim is a late 94 4.0 model, and not sure if it is relevent but the central locking is constantly switched on (makes getting in and out of it interesting!!) The fuse is 13th from the left, when I turn the ignition on I get a lot of clicking noises from the relays in a box on the far left of the upper part of the dash.