Here's another option: The Bosch relays were a little too pricey for me so a google search turned up these identical SPDT take-offs for ~$3.50 ea. They look and mount just like the Bosch units.
Tyco Electronics 0-1432873-1. They're 6v, 40 amp low resistance relays and you can get them here:
http://www.newark.com/jsp/displayPro...TECONNECTIVITY
I use two of them on the grey coupe... one for the electric fuel pump and one for a universal 6v wiper that I sometimes swap out for the vacuum unit on cross country trips (one advantage of not having a headliner installed)... Both are wired with switches off of the ignition circuit so everything shuts down with the key. I've been using them for almost three years now w/ no trouble.