Jumper Cable Quick Disconnect

I want to put a jumper cable quick disconnect on the front bumper of my truck. It's a 98 GMC Sonoma 4X4. I can wire it up with no problems.

I would like to have the QD hooked to a relay so that I can switch it on in the cab. Do I need to get a relay that will handle 400 amps (my jumper cable rating)? Where would I get one?

A number of companies make quick disconnect plugs for 4 gauge cable. They aren't cheap but give a professional results and terminate the cables properly. They are sold in a set that give you two connectors (one for each end of the cable that you want to quickly hook up. As for a relay I would suggest that you instead use a high current fuse rated for high current installed inline to safe guard an accidental short circuit. As long as the cables are installed and terminated correctly to guard against shorts this should work well and keep everything safe. The plugs are often used for plow kits to hook up the hydraulic pumps to the battery.

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sparky

None of the kits I've seen have a relay for switching the power on and off. I just bought a kit, and it hooks to the battery without a switch of any kind. I want to make sure that there is only voltage at the connector when I want it. I want to avoid accidental shocks, shorts, etc. The dust cover is okay, but my 3 year old could pull it off.

Is there a heavy duty relay I can use to switch the power on and off from inside the cab?

you're best bet would probably be a heavy duty starter solenoid. They are built for starting current.

Use a battery isolator instead, rated at least 20-25% over what you need. An isolator is very similar to a starter solenoid, however the windings are higher resistance, so they won't burn up from prolonged use over extended periods of time.

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My ex once told me I have a perfect face for radio.

I'm not very familiar with battery isolators. Are they switchable?

Yes, it's basically the same as a starter solenoid (it's just a high current relay). Here's an example. You should be able to find something similar at a local car audio shop.

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My ex once told me I have a perfect face for radio.

You can also find isolators at your local Napa Auto Parts.

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001