Take a look at the VAG stuff. They run a small fuse box off the battery, with high amp fusible links inside and terminals.
search egay for VW Battery fuse box etc. There are various designs. TPS will sell them at reasonable prices. Some of the egay prices are actually high.
http://www.ebay.co.uk/itm/VW-MK4-Gol...f#ht_779wt_961