First gen sequoia alternator replacement / 2003 Toyota Sequoia high output alternator install .

This video is for documentation purposes only, this is not a tutorial and should not be used as a guide for your repairs, attempt this at repair at your own risk. 2003 Toyota Sequoia high output alternator install as well as power cable upgrade and added ground.

[@SKYWalker0G_76]

Best video for this repair - Thank you for the help! New Mechman installed now. Did you bypass the fuse box wiring?

[@locorudy626]

I did not, I kept the factory wires in place just removed the factory terminal clamp on the positive side and cut the stud clamp and drilled a hole to bolt on to the sky high terminal on the negative side at the battery, glad my video helped, the only reason I did it.

[@SKYWalker0G_76]

@@locorudy626 Right on, Thank you again. Makes perfect sense.

[@motube2389]

What benefit do the bigger wires to the battery have over stock? Just curious, also wondering if that increase or decrease parasitic draw Thanks

[@locorudy626]

I upgraded the power wires on the alternator to minimize the risk of a current bottleneck, as I was planning to install a large audio system, which is now installed. The system draws about 600 volts lol 0, primarily supplied by additional batteries. To ensure optimal energy flow, I installed a 280A alternator and used 600A-rated cables. Even the stock alternator, which operates at a little over 100A, would benefit from slightly larger cables, such as 0 gauge. Regarding parasitic draw, I haven't noticed any issues. My truck can sit for over a week and still starts up without hesitation, although I haven't measured the draw specifically. Also might not notice as I'm running 2 deep cycle AGM and 1 lithium 64ah so even if I did it would take over a month to drain and the longest I go is a week at most without driving it.

[@phuh1467]

What amp is your new HO alternator?

[@locorudy626]

250A