I'm still awaiting delivery of my instruments - should be tomorrow....... however, the ETB Intruments website has circuit diagrams and sensor/power wiring for the gauges plus setup instructions http://etbinstruments.com/Wiring_Instructions.htm and the Westfield chassis loom schematic as available at http://www.manikllc.com/manuals/ The schematic is at issue A and the latest is issue D, but the changes don't affect the instruments (iss B fuel pump fuse changed to 20A, Iss C Cooling Fan connector changed, iss D added the power socket and extended the brake fluid wire to 750mm).
KugaWestie provided the speedo pulse info at http://toyotires.com..._value&sort=asc on another post yesterday - 205/50 R15 is 900 revolution/mile x number of triggers (bolts or magnets).
Hope this helps
Jon H