The ubiquitous cigarette lighter plugs that most 12V equipment uses are very poor when it comes to making and keeping a power connection. A better type of connector would be the XLR connector which many people recognize as being the type used on microphones and other audio equipment. These have an added benefit of locking in place.
That is about it for this project. I put Velcro on the back of the power box so that it could 'ride' on my battery pack or a leg of my tripod as seen in the image below left. This gives me 4 12v outputs for large currents such as the mount and anti-dew controller. Also, I have the single cigarette lighter connector to power my netbook (I'm not taking that adapter apart), a set of terminal lugs and some banana plugs on the rear. Good for just about any 12v need.
When I have access to 'shore power' I use a the Koolatron 5A power supply seen in the image below right. This is a very good unit with overcurrent and overtemp protection that provides enough power for everything I need to run. The netbook, or course, has it's own power supply that can be used.
From the diagram above you can see that I built power cables for all of my needs; the ST-4 which uses a DB9, mount and 5v supply which use different DC plugs and the anti-dew heat controller that uses banana plugs. Also, I put a female plug on the 2A Celestron power supply in case I needed to use it.
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