# After market alternator **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [November 14, 2019, 8:57pm UTC](https://community.cartalk.com/t/after-market-alternator/152797 "2019-11-14T20:57:47Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Blakensnake](https://avatars.discourse-cdn.com/v4/letter/b/6bbea6/32.png) [@Blakensnake](https://community.cartalk.com/u/Blakensnake)\ **Post date:** [November 14, 2019, 8:57pm UTC](https://community.cartalk.com/t/after-market-alternator/152797/1 "2019-11-14T20:57:47Z")
I have a 5,000 watt amp that I have to 2 channel to my subwoofers so it didn’t pull to much power to the subs. I notice at full power the lights dim and I rather just run one channel and have more power without the dim. Except the 2002 alternator for a corolla only pulls 80 amps so ill have to find one that pulls 120-140 amps but where do I find an upgraded alternator that’ll be compatible with my car. Sorry for dumb question I’m just use to going to autozone and buying the same part but ill need an upgraded part instead. Thanks 🙂 ---
**Author:** ![Scrapyard-John](https://avatars.discourse-cdn.com/v4/letter/s/f6c823/32.png) [@Scrapyard-John](https://community.cartalk.com/u/Scrapyard-John)\ **Post date:** [November 14, 2019, 8:59pm UTC](https://community.cartalk.com/t/after-market-alternator/152797/2 "2019-11-14T20:59:58Z")
Not sure, but you might check Rockauto’s website. They might have an upgraded alternator for your car. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [November 14, 2019, 9:06pm UTC](https://community.cartalk.com/t/after-market-alternator/152797/3 "2019-11-14T21:06:06Z")
> **[Toyota Corolla High Output Alternators](https://www.qualitypowerauto.com/catalog.php?item=452)** > > Toyota Corolla High Output Alternators > Below are the available amperages we have for the Toyota Corolla from 1984 to 2016. Our high output alternators are a direct bolt-in replacement for your original factory... Tester ---
**Author:** ![wolyrobb](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/wolyrobb/32/45497_2.png) [@wolyrobb](https://community.cartalk.com/u/wolyrobb)\ **Post date:** [November 14, 2019, 9:10pm UTC](https://community.cartalk.com/t/after-market-alternator/152797/4 "2019-11-14T21:10:35Z")
Tester beat me to it, 160amps. Appears to be built to order so it will take a few days for them to build yours. ---
**Author:** ![Blakensnake](https://avatars.discourse-cdn.com/v4/letter/b/6bbea6/32.png) [@Blakensnake](https://community.cartalk.com/u/Blakensnake)\ **Post date:** [November 14, 2019, 9:41pm UTC](https://community.cartalk.com/t/after-market-alternator/152797/5 "2019-11-14T21:41:27Z")
Thanks tester, if I leave the car how it is, can the diming and high power pull harm the battery, alternator or anything else in that nature? ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [November 14, 2019, 9:49pm UTC](https://community.cartalk.com/t/after-market-alternator/152797/6 "2019-11-14T21:49:31Z")
The alternator is being overtaxed because it can’t meet the demand. It’s like trying to recharge a dead battery with the alternator. The alternator runs hot and fails. Tester ---
**Author:** ![vipergg](https://avatars.discourse-cdn.com/v4/letter/v/50afbb/32.png) [@vipergg](https://community.cartalk.com/u/vipergg)\ **Post date:** [November 16, 2019, 5:56pm UTC](https://community.cartalk.com/t/after-market-alternator/152797/7 "2019-11-16T17:56:35Z")
It may or may not but today’s computer controlled vehicles like a stable voltage across the computers not brownouts when you crank up AC/DC to 120 decibels . ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [November 17, 2019, 9:02am UTC](https://community.cartalk.com/t/after-market-alternator/152797/8 "2019-11-17T09:02:40Z")
The computers will shut down when the voltage drops below 10 volts, that is unlikely to occur with a good battery in the vehicle. Years ago when large amplifiers were the “hip” thing, they would install a second battery in the trunk near the amplifier to provide stable voltage. The amplifier doesn’t draw 5000 watts continuously, the second battery helps to reduce the headlight fluctuation during the bass hits.