# Wiring electric radiator fan with toggle

**URL:** <https://forums.speedlife.net/t/wiring-electric-radiator-fan-with-toggle/250999>\
**Category:** Shift518 Automotive\
**Created:** [March 20, 2010, 6:12pm UTC](https://forums.speedlife.net/t/wiring-electric-radiator-fan-with-toggle/250999 "2010-03-20T18:12:03Z")\
**Posts on this page:** 1\
**Showing post:** 20

<div class="post-metadata">

**Author:** ![Boxersix](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boxersix/32/6327_2.png) [@Boxersix](https://forums.speedlife.net/u/Boxersix)\
**Post date:** [March 20, 2010, 8:57pm UTC](https://forums.speedlife.net/t/wiring-electric-radiator-fan-with-toggle/250999/20 "2010-03-20T20:57:10Z")

</div>

> [@5.31.07 TITS](https://forums.speedlife.net/t/5-31-07-tits/30133/16):
>
> Get a SPDT switch. Center connection from the switch goes to the fan relay signal input. Other switch connection goes to the fan relay signal coming from the ECU (you have to cut the wire from the ECU to the relay). The last switch connection goes to either ground or 12V (depends on relay configuration).
> 
> That way the switch will either turn the fan on or switch back to auto control from the ECU.

^ This because the first time you forget to flip the switch and leave your car running for 20 minutes while chatting it up with friends you’ll wish you never fucked with it. Tis why my fan on the EG33 WRX is wired key on through a relay. Comes on and stays on as soon as I turn the key.

ask me how I know :wierd

---

_[View the full topic](https://forums.speedlife.net/t/wiring-electric-radiator-fan-with-toggle/250999)._