Any other needed alterations after installing larger alternator?

[Andrew Bynum]

Apologies if this has been answered before...I've searched the threads and can't seem to find the answer.

I replaced my 145amp alternator with a 160amp alternator. I also installed a larger wire to the negative post of the battery.

My headlights and interior lights are flashing, and the voltmeter bounces between 13-16 volts.

Is there anything else I need to do...? Or does my Tahoe just not like the 160 amp alternator?

Thank you in advance!

 

[DirtyStatus]

You need to complete the big three wiring upgrade. It upgrades the engine to chassis ground, battery to chassis, and power wire from the alternator to the power distribution block.