We still get a large number of emails from first time DIY installers asking how to
wire a solenoid as a battery isolator or asking why the solenoid is not working after
The most common problem is that they have not supplied power to the coil to activate
the solenoid. The solenoid will only activate if power is applied to the two small
studs on the solenoid. This power is best supplied by an ignition switched accessory
circuit that is not active during engine cranking which is typically the wiper circuit
or the cigar socket circuit. If wired in this way the solenoid is not active during
cranking allowing the aux battery to discharge the cranking battery when trying to
start the car. If you require start assist then you can use an ignition source that
is active all the time.
Please refer to the picture below note that the solenoid coil circuit is earthed
to the car body and then is activated by an ignition switched circuit. This applies
to all solenoids including the round cylinder type solenoids.
I recently obtained an outdoor Bluetooth speaker from PGE Australia and am suitably
impressed by the product. The speaker works with all mobile phones with Bluetooth.
The phone streams music to this powerful speaker that lasts about 7 hours on a charge.
The speaker has become a great camping accessory and is used around the home and
especially the BBQ and Pool areas to listen to music. The speaker simply recharges
via a USB cable, has simple controls and is more than powerful enough. You will be
surprised with the output and music quality produced.
I have obtained a limited number of these from PGE for this week’s newsletter.
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