Run accessories off cigarette lighter

I purchased the 3TPAM with the 4.8A USB Rapid Charger from Blue Sea Systems I also have 2 of the Hondo Garage Juiced Squeeze - Wireless Charge Mounts.

Installing on a 2019 tacoma offroad

My idea was to splice both the USB rapid charger and the two wireless chargers into the cigarette lighter while installing the 3TPAM.

Is this safe to do?

The wireless charges are rated at 12v/3A (2 of these)
and the USB charger is rated at 12v/4.8A

So if I have everything running ( not including something plugged into the cigarette lighter) I'd be hitting a possiable 129.6 watts. I've heard the cigarette lighter is rated for 10A?

Thoughts?

BTW: I'm a noobie with electrical

 

Bad idea, the cigarette lighter and power socket have a 15 amp shared fuse. I would be worried more about the wiring size not necessarily the fuse. If you've ever worked on new cars like these you'll see how much they cheap out on wire gauge.

You'd be encroaching on the limit of that if someone were to plug into them at the same time you have your other chargers going. You will be better off to run a dedicated fused wire from the battery. Another thing to note is that the cigarette lighter and power socket are on switched ignition power so your chargers wouldn't work unless the key is on the accessory mode.

 

Yea that's what I was worried about. I'm not sure what gauge wire is used for the cigarette lighter.

I think that's okay for my case. My truck is still stock so I don't have a 2nd accessory battery to be able to keep it constantly on without worrying about the starter battery draining. The blue sea USB charger also has a 1mA parasitic draw so I wouldn't want that always attached.


So it sounds like I should run a new 12 or 14 gauge wire from the battery but then I have to figure out how to disconnect it when the ignition is off. I guess one short cut could be that I don't hook up the cigarette lighter.

 

Yes that would be the best bet. If you want to keep it ignition switched, another option which I would recommend would be to tap into the cigarette outlet and use that to trigger a new relay coil; then have that relay provide power to all your ignition switched accessories.

 

So you tap the power and just add a relay? Ground off the relay? Then a separate splice into something that turns off with ignition?

 

Excuse my crude MS paint schematic, but this is what I had in mind. This will ensure you can size the appropriate wire and fuse for all your new ignition switched accessories, and add minimal load to the existing wiring (relay coil only)

 

I wonder if the internal fuse box has a spare area to add on a new wire that would take care of the relay part (only wanting to turn it on when the ignition is on)

 

Negative, I've looked before and toyota cheaped out on spare electrical accessories.