# 2016+ main wiring harness

**URL:** <https://community.electricforum.com/t/2016-main-wiring-harness/30063>\
**Category:** GEM Forum\
**Tags:** tips, gem\
**Created:** [December 29, 2025, 8:48pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063 "2025-12-29T20:48:26Z")\
**Posts on this page:** 20\
**Page:** 1

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**Author:** ![eltakeiteasy](https://avatars.discourse-cdn.com/v4/letter/e/96bed5/32.png) [@eltakeiteasy](https://community.electricforum.com/u/eltakeiteasy)\
**Post date:** [December 29, 2025, 8:48pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/1 "2025-12-29T20:48:26Z")

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Looking for a 2016+ wiring harness for a project I am working on 🙂

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**Author:** ![Cformony](https://avatars.discourse-cdn.com/v4/letter/c/b19c9b/32.png) [@Cformony](https://community.electricforum.com/u/Cformony)\
**Post date:** [December 30, 2025, 12:54am UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/2 "2025-12-30T00:54:58Z")

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Neighborhood electric vehicles. Chandler, az. 480/331/9703

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**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\
**Post date:** [December 30, 2025, 1:48am UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/3 "2025-12-30T01:48:14Z")

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Have you tried Ghettoass electrical vehicles? Spare parts at 26 cents on the dollar. …

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**Author:** ![eltakeiteasy](https://avatars.discourse-cdn.com/v4/letter/e/96bed5/32.png) [@eltakeiteasy](https://community.electricforum.com/u/eltakeiteasy)\
**Post date:** [December 30, 2025, 2:24am UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/4 "2025-12-30T02:24:21Z")

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Thank you very much!

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**Author:** ![eltakeiteasy](https://avatars.discourse-cdn.com/v4/letter/e/96bed5/32.png) [@eltakeiteasy](https://community.electricforum.com/u/eltakeiteasy)\
**Post date:** [December 30, 2025, 2:24am UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/5 "2025-12-30T02:24:41Z")

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I tried calling you a few times before I posted …

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**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\
**Post date:** [December 30, 2025, 2:45am UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/6 "2025-12-30T02:45:59Z")

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It’s been a while. Maybe they got raided. I mean went out of business

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**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\
**Post date:** [December 30, 2025, 3:52am UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/7 "2025-12-30T03:52:15Z")

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Strange request. Can you share.

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**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\
**Post date:** [January 10, 2026, 10:18pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/8 "2026-01-10T22:18:34Z")

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Do you want help completing the 72v conversion.

The botched conversion must have messed up the 12v system. That’s what kills the dash. I can repair dash in most cases.

Complete conversion need Gen4 controller. \<$500, dc-dc wide range input. ~$200. And dq or other charger to match battery. Dq can do 98v max.

Use a DQ dci charger to replace both converter and charger. ~$750

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**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\
**Post date:** [January 10, 2026, 10:22pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/9 "2026-01-10T22:22:00Z")

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Dual throttle can be troublesome in some cases, due to the tight fault tolerance. I can also do a fs1 in hardware, triggered from throttle low side. ,5v to 2.5v,

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**Author:** ![eltakeiteasy](https://avatars.discourse-cdn.com/v4/letter/e/96bed5/32.png) [@eltakeiteasy](https://community.electricforum.com/u/eltakeiteasy)\
**Post date:** [January 14, 2026, 10:55pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/10 "2026-01-14T22:55:08Z")

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I got all the 12v stuff working again! Lights, horn, windshield wiper, speedo etc! I am debating a 72v upgrade you have time to jump on a quick call ?

Feel free to text me if eaiser: 415.754.9597

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**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\
**Post date:** [January 14, 2026, 11:38pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/11 "2026-01-14T23:38:58Z")

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See pm. Sorry I can’t do phone. Byron likes to chat and knows pretty much everything I do +.

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**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\
**Post date:** [January 14, 2026, 11:40pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/12 "2026-01-14T23:40:36Z")

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You need 72v charger, wide range dc-dc converter, and of course new controller. That’s about it.

Dci charger can do both, charger and 12v.

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**Author:** ![eltakeiteasy](https://avatars.discourse-cdn.com/v4/letter/e/96bed5/32.png) [@eltakeiteasy](https://community.electricforum.com/u/eltakeiteasy)\
**Post date:** [January 15, 2026, 1:55am UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/13 "2026-01-15T01:55:16Z")

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Thanks who is Byron not sure if I met him yet. Also do you think 72v is worth the upgrade? Was thinking about using this: [72-Volt / 105-AH Professional kit "Power" - Bolt Energy USA](https://boltenergyusa.com/product/72-volt-105ah-high-output-lithium-battery-kit-power/)

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**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\
**Post date:** [January 15, 2026, 4:17am UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/14 "2026-01-15T04:17:56Z")

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Byron= @AssyRequired

If you have deep pockets. I don’t know the cost of Bolt products. I do notice that they seem to be only 23s, rather than full voltage.

You can diy a 110ah 88v battery for \<$2,000. Much less after you learn to do it totally by yourself.

If you want high performance, hv is the best bang for the buck. You can do the controller swap, then swap batteries anytime. The 80v controller operates from 40v to over 100v.

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**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\
**Post date:** [January 15, 2026, 10:50am UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/15 "2026-01-15T10:50:03Z")

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> [@eltakeiteasy](#):
>
> who is Byron

Hes like the John Wick of Gem electronics. His focus and drive on these electronics issues is pretty much unmatched.  
So. yes, AssyRequired is the guy you send to go kill the boogeyman in your control electronics.

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**Author:** ![AssyRequired](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/assyrequired/32/7621_2.png) [@AssyRequired](https://community.electricforum.com/u/AssyRequired)\
**Post date:** [January 15, 2026, 5:04pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/16 "2026-01-15T17:04:54Z")

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I am traveling a bit this weekend.  
Coverage and monitoring here will be spotty.  
As is my advice.  
My expertise is very limited with the Gen4(?) 2016+ cars tho. I’m scared of those.

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**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\
**Post date:** [January 15, 2026, 5:14pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/17 "2026-01-15T17:14:23Z")

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> [@eltakeiteasy](#):
>
> I am debating a 72v upgrade

Michael M. aka @LithiumGods has done extensive testing. He may also have a high performance battery for you.

You can run a 60v battery with oem charger and converter. Performance is much improved. So says mm.

Stay away from low voltage lithium (Bolt) if you want high performance. Even though I have sold high capacity 12s lith-ion batteries. They were for long range at 25mph.

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**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\
**Post date:** [January 15, 2026, 5:52pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/18 "2026-01-15T17:52:58Z")

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it everything is working, a 64v lithium upgrade will work with your reprogrammed charger and all dash functions still work. Also I can reprogram your controller for much better acceleration, 1/2 price with battery. I have a few before and after videos if interested

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**Author:** ![eltakeiteasy](https://avatars.discourse-cdn.com/v4/letter/e/96bed5/32.png) [@eltakeiteasy](https://community.electricforum.com/u/eltakeiteasy)\
**Post date:** [January 15, 2026, 8:17pm UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/19 "2026-01-15T20:17:11Z")

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That would be great. any videos you can send would be greatly appreciated!

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<div class="post-metadata">

**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\
**Post date:** [January 16, 2026, 2:37am UTC](https://community.electricforum.com/t/2016-main-wiring-harness/30063/20 "2026-01-16T02:37:52Z")

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And if things are not working, his 64v battery will work with my jail broke controller to 35mph.

Controller by passes all Polaris proprietary parts, that may be bad, or just wonky..

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