G'day Jack,

This pump pushes better than it sucks. So if you need to have a water source further away, the pump is best kept closer to the water source than the shower itself.
Hope that helps!

G'day Katie,

We don't sell Camplux so unfortunately, we're not familiar with how loud that is compared to the Smarttek pump unit.  The only information that we can provide is that noisiness hasn't been a complaint with the Smarttek units, so we can assume it doesn't operate at a noise loud enough to cause issues.  I've personally used the Smarttek pump a few times before, and its operating volume wasn't memorable.
Hope that helps.

G'day John,

Yes, I've just double checked this, and can confirm that the pump is self priming.

G'day David,

It only comes with the Alligator Clips cable.  There isnt a 12v cigarette cable option at present, as the Smarttek Multi Cable options pack is not currently available.
Modifying this supplied cable would be a relatively quick and easy job for an auto electrician, or if you know someone who is handy with electronics.

G'day John,

Sounds like the Smarttek 6L/pm will more than adequately suit your needs with the set up you've described.
We run something similar at home with our DIY solar hot water system.
Hope that helps!