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Step 2What do you need
Parts:
1 x 30 amp voltage sensing relay (VSR)
2m of 27 amp flexible red cable
0.5m flexible black cable (not shown in the photo)
2 x fuse holders
2 x 25 amp fuses
3 x crimp eye connectors
1 x -ve battery strap (not shown in the photo)
Handful of cable ties (not shown in the photo)
Various sizes and lengths of heat shrink sleeving
Tools:
Side cutters
Crimp tool
Multimeter
Flat bladed screwdriver
Lighter
There are relays around that can deal with much larger currents, typically they are used for 4x4 and emergency vehicle applications but they start to get very expensive. Unless your leisure battery is very flat a 30A VSR will be suitable. In the worst case your leisure battery will be too flat and draw more the 25 amps. At this point you fuses will blow and the battery won't charge from alternator. You'll have to hook it up to a mains charger to give it an initial boost before putting it back in the van. Under normal use there shouldn't be any problems so it's not worth worrying about.
I got my VSR from Ebay but they are available from other sources.
Try these: http://www.towsure.com/product/1828 or Ebay - Discount Towing Supplies
I got the other bits and pieces from a number of places and at different times for other jobs but all of the parts are available from Halfords super stores.
1 x 30 amp voltage sensing relay (VSR)
2m of 27 amp flexible red cable
0.5m flexible black cable (not shown in the photo)
2 x fuse holders
2 x 25 amp fuses
3 x crimp eye connectors
1 x -ve battery strap (not shown in the photo)
Handful of cable ties (not shown in the photo)
Various sizes and lengths of heat shrink sleeving
Tools:
Side cutters
Crimp tool
Multimeter
Flat bladed screwdriver
Lighter
There are relays around that can deal with much larger currents, typically they are used for 4x4 and emergency vehicle applications but they start to get very expensive. Unless your leisure battery is very flat a 30A VSR will be suitable. In the worst case your leisure battery will be too flat and draw more the 25 amps. At this point you fuses will blow and the battery won't charge from alternator. You'll have to hook it up to a mains charger to give it an initial boost before putting it back in the van. Under normal use there shouldn't be any problems so it's not worth worrying about.
I got my VSR from Ebay but they are available from other sources.
Try these: http://www.towsure.com/product/1828 or Ebay - Discount Towing Supplies
I got the other bits and pieces from a number of places and at different times for other jobs but all of the parts are available from Halfords super stores.
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