Faulty Redarc SmartStart SBI12 12VDC Dual Battery Isolator

Redarc make a good isolator for the price.
I prefer the Qld made Rotronics because they use FETs to switch current rather than a solenoid.
My first Rotronics isolator lasted from 1987 to 2000 in two Landcruisers, and was still working fine when I sold it with my 60 series. My second one is an MH10 that has been in 3 Landcruisers including the current vehicle. Last one cost me $250, worth every cent.

Ditto to Phil - had an early Rotronics isolator in two vehicles over about 10 years - gave it away still working to a mate when my LC came with a Surepower isolator already in it. But Redarc is a great South Australian company ('carn the Crows') .....and they offer good customer support too....:-o).

Troll 81.

It's not so much the Isolator itself, it's the components on the PC Board in the detection box that stuff up.
They are made and assembled in the UK and are not replaceable according to Redarc in Lonsdale.

Cheers P&J