# 48v DC motor question.... Please help **URL:** \ **Category:** Conversion Kits\ **Created:** [April 25, 2020, 1:45am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603 "2020-04-25T01:45:11Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Sultany](https://avatars.discourse-cdn.com/v4/letter/s/d2c977/32.png) [@Sultany](https://community.electricforum.com/u/Sultany)\ **Post date:** [April 25, 2020, 1:45am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603/1 "2020-04-25T01:45:12Z")
![Screenshot_20200424-180040_Photos](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/1/176690d02be83a51ed26608126f25507e9656bce.jpeg) I have been trying to convert an old John deer gator to electric I have a 48v lipo battery bank going to a 500a Curtis DC controller and wired to 36v DC series motor I have wired it to a1 to battery. S2. To M terminal and A2 to A2. I have 51v between. A1 to S2 with my multimeter but. Motor isn’t spinning, not sure if I’m doing something wrong with wiring or have a bad DC motor? Please help… ---
**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:** [April 25, 2020, 1:57am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603/2 "2020-04-25T01:57:54Z")
How is s1 connected? Do you want to test motor direct to battery or is it connected to the controller? ---
**Author:** ![Sultany](https://avatars.discourse-cdn.com/v4/letter/s/d2c977/32.png) [@Sultany](https://community.electricforum.com/u/Sultany)\ **Post date:** [April 25, 2020, 2:23am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603/3 "2020-04-25T02:23:04Z")
I don’t have s1 connected to anything The DC controller is connected directly to the motor [Screenshot\_20200418-201402\_Drive|243x500](https://community.electricforum.com/uploads/short-url/ve32d4sLkvIaWOQZ9RWnix7Fb9V.jpeg) ---
**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:** [April 25, 2020, 3:48am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603/4 "2020-04-25T03:48:59Z")
Motor can’t run without s1 and s2 connected. It’s a series motor. Meaning the field s1- s2, and armature are connected in series. ---
**Author:** ![Sultany](https://avatars.discourse-cdn.com/v4/letter/s/d2c977/32.png) [@Sultany](https://community.electricforum.com/u/Sultany)\ **Post date:** [April 25, 2020, 3:51am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603/5 "2020-04-25T03:51:37Z")
Should I connect s1 to S2, and leave the rest as is? ---
**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:** [April 25, 2020, 3:57am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603/6 "2020-04-25T03:57:33Z")
No current must go through both field and armature to run. If you don’t have f-r relays, connect as the pump diagram. ![Screenshot_20200424-225305](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/b/b1f48954576c897b2176fecb2f0dddf3a81a9e5b.jpeg) Switch s1 and s2 to reverse direction. ---
**Author:** ![Sultany](https://avatars.discourse-cdn.com/v4/letter/s/d2c977/32.png) [@Sultany](https://community.electricforum.com/u/Sultany)\ **Post date:** [April 25, 2020, 4:39am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603/7 "2020-04-25T04:39:21Z")
Thanks , makes a lot of sense, it sounds like I need to jump A2 to S1 Does this diagram look right? ![Screenshot_20200424-213454_Photos](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/e/e81aa8496ebd219efc30256a9f62ccbcec86cd66.jpeg) ---
**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:** [April 25, 2020, 11:54am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603/8 "2020-04-25T11:54:18Z")
That should work… ---
**Author:** ![Sultany](https://avatars.discourse-cdn.com/v4/letter/s/d2c977/32.png) [@Sultany](https://community.electricforum.com/u/Sultany)\ **Post date:** [April 28, 2020, 2:02am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603/9 "2020-04-28T02:02:46Z")
I think I’m still doing something wrong For some reason the voltage across A1 and s2 drops from 51 volt to 0 volts when I connect s1. To a2 And the motor does not spin when I disconnected the motor from the DC controller and applied voltage across A1 to. S2 directly from the battery the motor spinned, so I think the motor itself is fine there must be something wrong with my wiring or the DC controller ![Screenshot_20200427-185256_Photos](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/f/fc10bb66db03d33f7e81a525601f6220ff3e2d07.jpeg) ---
**Author:** ![Sultany](https://avatars.discourse-cdn.com/v4/letter/s/d2c977/32.png) [@Sultany](https://community.electricforum.com/u/Sultany)\ **Post date:** [April 28, 2020, 2:03am UTC](https://community.electricforum.com/t/48v-dc-motor-question-please-help/18603/10 "2020-04-28T02:03:44Z")
![Screenshot_20200427-185208_Photos](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/a/aec9185166f4648347d6bd74a747220490553bcd.jpeg) this is my main contactor from the positive terminal of the battery going to the b+ controller. Wasn’t sure if this is backwards