250 AMP weatherproof dual battery controller includes a three position switch to control the second battery through the operation of the solenoid. Switch position one isolates the second battery. Position two connects the battery while the ignition is on. Position three connect the second battery at all times. Kit includes solenoid, switch, pre-terminated wire/connectors, fuse holder, fuse and mounting hardware..

The relay isnt one of those cheapy plastic jobbies, it's a beast! (and can be used without the switch/rest of the kit if needed.

I'm after £50 for it (cost me £80 about a year back and has never been used!)

http://www.painlessperformance.com/webcata...archField=40103

bump

bump

still got this....