Battery Isolator

William,

I fitted the Rotronics MH10 in the engine bay next to the Auxilliary Battery. My main battery is also under the front seat. Opposite Lock(where I bought the unit) wanted to sell me a cable kit worth $70. Instead I bought a set of jumper leads, cut the ends off and fitted battery connectors all for $15. The distance to the main battery is about a metre or more. The isolator works really well.

Cheers,

Willie
Never a dull moment

I was the same don't buy the extra "must have cable kit with the fuseable link" that they say you must have. At the end of the day the jumper lead does just the same job if not better at quite a substantial saving. My unit would be about 1 m away from the batteries and they are still going strong after 3 years of service with no problems yet touch wood.

The reason Rotronics ask you to install it close to the main battery is because the unit needs to measure the starting battery's voltage and voltage drop can alter it. If you have the thick cables you won't have a problem.

When you fit this up, make sure the cable is secured properly to the undercarriage or inside the cabin. Keep it away from where sharp edges are or rubbing surfaces and all will be ok.
Jumper lead cables are a good idea :-)
Andrewwheredayathinkwer mike?

Had no room for the Rotronics anywhere near the main batt,, no room for aux batt under bonnet either so fitted aux batt in behind rear seat [ shortened 1 drawer in drawer unit, r/hand side has fridge slide above =easy access ] fitted Rotronics same place ,,never had 1 problem,, voltage drop is so minimal,, look in archives as cannot recall, was something like .005 volts between main and aux and .007 volts between aux and 3rd batt in camper trailer.