# Using a Trimble EZ Steer 250 motor with AOG on Case combine

**URL:** <https://discourse.agopengps.com/t/using-a-trimble-ez-steer-250-motor-with-aog-on-case-combine/13857>\
**Category:** Success stories\
**Created:** [24 August 2023 08:37 UTC](https://discourse.agopengps.com/t/using-a-trimble-ez-steer-250-motor-with-aog-on-case-combine/13857 "2023-08-24T08:37:14Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![andyinv](https://discourse.agopengps.com/letter_avatar_proxy/v4/letter/a/ecccb3/32.png) [@andyinv](https://discourse.agopengps.com/u/andyinv)\
**Post date:** [24 August 2023 08:37 UTC](https://discourse.agopengps.com/t/using-a-trimble-ez-steer-250-motor-with-aog-on-case-combine/13857/1 "2023-08-24T08:37:15Z")

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So, my friend had one of these in his combine, but he hated it - never held a good line, and as such it was just there gathering dust. Took it home to try and it’s a pretty decent PWM motor. And seeing as he had two AOG systems on his CVX and his MF, I thought I’d pinch one to try it out. I’ll write this up more fully later and get some decent photos, but it’s very simple and nothing more than :

- land rover wheel angle sensor on rear axle, grounded to the rear axle itself  
– two-core cable for 5V supply and 5V signal from pins 1 and 2 on Ampseal23 to WAS
- pins 5 and 6 on Ampseal23 to pins 1 and 3 on the DB9 for the steer motor
- 12v power to the board

And that’s pretty much it!

[![](https://discourse.agopengps.com/uploads/default/original/2X/2/220689471e800f988c0a5e3457878b1fd4946454.jpeg "agOpenGPS and Trimble EZ Steer 250 motor with a Case 1680 combine") ](https://www.youtube.com/watch?v=O74QhDi12l4)

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**Author:** ![torriem](https://discourse.agopengps.com/letter_avatar_proxy/v4/letter/t/8dc957/32.png) [@torriem](https://discourse.agopengps.com/u/torriem)\
**Post date:** [24 August 2023 13:23 UTC](https://discourse.agopengps.com/t/using-a-trimble-ez-steer-250-motor-with-aog-on-case-combine/13857/2 "2023-08-24T13:23:19Z")

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That’s a lot of amps for just a single pin on the DB9. You’ll want to double up and use both pins 1&2 together and also 3&4. Trimble used two sets of pins to get more amps into the motor without burning up the DB9.

Looks real good!

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**Author:** ![andyinv](https://discourse.agopengps.com/letter_avatar_proxy/v4/letter/a/ecccb3/32.png) [@andyinv](https://discourse.agopengps.com/u/andyinv)\
**Post date:** [24 August 2023 17:51 UTC](https://discourse.agopengps.com/t/using-a-trimble-ez-steer-250-motor-with-aog-on-case-combine/13857/3 "2023-08-24T17:51:12Z")

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Ah… I did test it, it didn’t draw much current - and the combine steers pretty freely; but noted, I might double it up just to be sure

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**Author:** ![PotatoFarmer](https://discourse.agopengps.com/user_avatar/discourse.agopengps.com/potatofarmer/32/11865_2.png) [@PotatoFarmer](https://discourse.agopengps.com/u/PotatoFarmer)\
**Post date:** [23 December 2023 04:51 UTC](https://discourse.agopengps.com/t/using-a-trimble-ez-steer-250-motor-with-aog-on-case-combine/13857/4 "2023-12-23T04:51:23Z")

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So strange seeing that motor calmed down with AOG, Trimbles always were fighting rapidly back and forth.

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**Author:** ![Richardklasens\_admin](https://discourse.agopengps.com/user_avatar/discourse.agopengps.com/richardklasens_admin/32/22279_2.png) [@Richardklasens\_admin](https://discourse.agopengps.com/u/Richardklasens_admin)\
**Post date:** [15 December 2024 12:58 UTC](https://discourse.agopengps.com/t/using-a-trimble-ez-steer-250-motor-with-aog-on-case-combine/13857/5 "2024-12-15T12:58:43Z")

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