2016 RAV4 Big 3 electrical upgrade help!

eshellito816 · Nov 30, 2019

Hey guys I'm new to the RAV4 world, I got mine back in May. Anyway Im adding some audio components as stock systems just don't do it for me. I know I'm going to need to do some electrical upgrades and the first place I want to start is upgrading all the wires under the hood (Big 3). I would start by upgrading the positive from alternator to battery, that part is easy. The next step would be to upgrade engine/alternator negative to the frame right? And then the battery negative to the frame. The part I'm confused most on is that the battery has 2 ground cables. One going directly to the frame and another that looks like it's going to the engine. So I should just upgrade them all and NOT replace anything right? Seems like a "Big 4" upgrade. Please anybody that can help me I would REALLY appreciate it

brion.ricardo · Nov 30, 2019

If is hibrid version and you put a new battery you habe to limit the charge and amps that go to the new battery i will never get more than 5amps to charge the new battery. And never use the systen with the car stopped. You need also better a AGM battery 20.30amp must be enoght. A thin cable connecting the two batterys no more than 6mm and 5meter could limit the amps you get from the car battery. No easy if you dont habe electronics abilities

Enviado desde mi SM-G965F mediante Tapatalk

Billyk24 · Nov 30, 2019

. I would start by upgrading the positive from alternator to battery, next step would be to upgrade engine/alternator negative to the frame right ----there is no alternator in Toyota hybrid vehicles.

eshellito816 · Nov 30, 2019

It's not a hybrid it's 2016 XLE. It just seems more like a big 4 upgrade when looking at it. So I've got the alt + to Batt + figured out, engine to the frame, battery to the frame, but there's an extra ground that looks to be going to the engine.

2016 RAV4 Big 3 electrical upgrade help!

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