domct203 said:You have the correct ratings (4-amp, slo-blo) but I think the size is wrong.
Measure the length of the fuse. If it is around 3/4" then you have the right fuse. If it is 1-1/4" long you need this one:
http://www.radioshack.com/product/index.jsp?productId=2103760
Hope this helps,
Dom