# Bunch of T2 Controllers

**URL:** <https://community.electricforum.com/t/bunch-of-t2-controllers/14986>\
**Category:** GEM Forum\
**Created:** [November 26, 2018, 2:56am UTC](https://community.electricforum.com/t/bunch-of-t2-controllers/14986 "2018-11-26T02:56:53Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Erniea15](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/erniea15/32/10887_2.png) [@Erniea15](https://community.electricforum.com/u/Erniea15)\
**Post date:** [November 27, 2018, 8:18am UTC](https://community.electricforum.com/t/bunch-of-t2-controllers/14986/6 "2018-11-27T08:18:13Z")

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I just swapped out my T1 with a T2 this weekend. Understand they’re a little better at dissipating heat and are generally a better controller.

You need 3 parts -

0106-00678 ASSY, WIRE HARNESS - SPLIT HEATSINK JUMPER  
0106-00827 ASSY, WIRE - SPLIT HEAT SINK JUMPER  
0606-00176 CONNECTOR, T - WIRE

The harness will convert you from 8 pins to 12 for the gauge.

Split heat sink and T-Wire will take power from pin #2 and run to pin( #23. **edit 2026 DB not pin 23 but pin 21)** Without it you’ll get error code -90. (give credit where credit is due, grant had an earlier thread about this).

I got my parts from [www.gemcarpartsdirect.com](http://www.gemcarpartsdirect.com). Dealer prices so I think it was around $150.

Once I got the controller in the car, used the programming cable and software to push all my T1 settings that R4F had configured for me when I bought the upgraded motor. I’m in a similar boat in that I had 2 T2s I wanted to test, I ended up just putting them both in and driving around for a bit to see if I got any faults.

I asked the guy who sold me the cable about bench testing, his guidance - “you just need pin 1 feed..Plus power to the controller, you’ll need ground on the large Battery negative bar and at least 24 volts to Pin 1 on the main 23 pin plug. On the controller itself for power.” I never tried that and figured it was just easier to throw it in the car.

Good luck!

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