# Heater switch **URL:** \ **Category:** GEM Forum\ **Created:** [October 28, 2015, 10:36pm UTC](https://community.electricforum.com/t/heater-switch/5500 "2015-10-28T22:36:06Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Jsrrags](https://avatars.discourse-cdn.com/v4/letter/j/bc79bd/32.png) [@Jsrrags](https://community.electricforum.com/u/Jsrrags)\ **Post date:** [October 28, 2015, 10:36pm UTC](https://community.electricforum.com/t/heater-switch/5500/1 "2015-10-28T22:36:06Z")
Can someone tell me if the stock heater switch is designed to spring to off? So to run the heat or defrost you have to keep your finger on the switch. Thanks, Jeff ---
**Author:** ![grantwest](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/grantwest/32/15_2.png) [@grantwest](https://community.electricforum.com/u/grantwest)\ **Post date:** [October 29, 2015, 8:46am UTC](https://community.electricforum.com/t/heater-switch/5500/2 "2015-10-29T08:46:57Z")
Nope the stock heater switch flips in and stays on! Your switch must be broken. I’m sure you can find a replacment switch at most auto parts store ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [October 29, 2015, 10:26am UTC](https://community.electricforum.com/t/heater-switch/5500/3 "2015-10-29T10:26:39Z")
The GEM heater switch is a specialty item and scarce as hens teeth. Also expensive. Takes some changing to replace it with a commonly available automotive switch. ---
**Author:** ![Rascal](https://avatars.discourse-cdn.com/v4/letter/r/439d5e/32.png) [@Rascal](https://community.electricforum.com/u/Rascal)\ **Post date:** [October 29, 2015, 12:24pm UTC](https://community.electricforum.com/t/heater-switch/5500/4 "2015-10-29T12:24:13Z")
I’ll trade you ten heater switches for one GEM factory AC switch… ---
**Author:** ![Jsrrags](https://avatars.discourse-cdn.com/v4/letter/j/bc79bd/32.png) [@Jsrrags](https://community.electricforum.com/u/Jsrrags)\ **Post date:** [October 29, 2015, 6:16pm UTC](https://community.electricforum.com/t/heater-switch/5500/5 "2015-10-29T18:16:13Z")
> [@Gwest;27030](#): > > Nope the stock heater switch flips in and stays on! Your switch must be broken. I’m sure you can find a replacment switch at most auto parts store Gwest, Is there any way I can get a pic or diagram of how the switch should be wired. I think the previous owner might have messed with it. Thanks, Jeff ---
**Author:** ![grantwest](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/grantwest/32/15_2.png) [@grantwest](https://community.electricforum.com/u/grantwest)\ **Post date:** [October 29, 2015, 6:47pm UTC](https://community.electricforum.com/t/heater-switch/5500/6 "2015-10-29T18:47:13Z")
The heater is only 2 wires. The switch simply connects 2 wires. ---
**Author:** ![grantwest](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/grantwest/32/15_2.png) [@grantwest](https://community.electricforum.com/u/grantwest)\ **Post date:** [October 29, 2015, 6:48pm UTC](https://community.electricforum.com/t/heater-switch/5500/7 "2015-10-29T18:48:33Z")
The switch that’s on my lower dash is a common everyday switch Unless it’s 72 volt ??? ---
**Author:** ![Jsrrags](https://avatars.discourse-cdn.com/v4/letter/j/bc79bd/32.png) [@Jsrrags](https://community.electricforum.com/u/Jsrrags)\ **Post date:** [October 29, 2015, 7:46pm UTC](https://community.electricforum.com/t/heater-switch/5500/8 "2015-10-29T19:46:55Z")
There 8 spades with a couple jumpers on the back. Does anyone have a pic or diagram of the correct wiring? Thanks, Jeff ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [October 29, 2015, 10:43pm UTC](https://community.electricforum.com/t/heater-switch/5500/9 "2015-10-29T22:43:54Z")
It’s not an ordinary switch (0106-00595 ASSY, HEATER CONTROL SWITCH) and has been a PITA for owners since day one. If you want to do a little updating and are electrically handy I have a PDF of the electrical diagram for a 2005 which has a simple circuit. Email me [rodneyadiehl@aol.com](mailto:rodneyadiehl@aol.com) ---
**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:** [October 30, 2015, 2:18pm UTC](https://community.electricforum.com/t/heater-switch/5500/10 "2015-10-30T14:18:11Z")
Could someone post a picture? I’m missing something. Oh, I get it! Doh. The 2005 is the simple one. ---
**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:** [October 30, 2015, 2:44pm UTC](https://community.electricforum.com/t/heater-switch/5500/11 "2015-10-30T14:44:13Z")
Here is the 2005 with relay. And a 30 amp switch without relay. I could draw a switch and bosch relay with numbers if it was helpful. ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [October 30, 2015, 4:38pm UTC](https://community.electricforum.com/t/heater-switch/5500/12 "2015-10-30T16:38:35Z")
Note blower motor is off the 12Volt Buss Heater coil is off the 72volt buss ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [October 30, 2015, 4:43pm UTC](https://community.electricforum.com/t/heater-switch/5500/13 "2015-10-30T16:43:30Z")
We saw this happen once. We were living in Tuscaloosa. ---
**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:** [October 30, 2015, 5:13pm UTC](https://community.electricforum.com/t/heater-switch/5500/14 "2015-10-30T17:13:23Z")
[quote=OLD HOUSEBOATER;27054]Note blower motor is off the 12Volt Buss Heater coil is off the 72volt buss[/quote] I’ll change it to reflect that. Or delete it if not helpful. May be hard to find a switch rated 72vdc at \>30a. Digikey has one but it’s $25:eek: ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [October 30, 2015, 6:04pm UTC](https://community.electricforum.com/t/heater-switch/5500/15 "2015-10-30T18:04:30Z")
Believe me $25 is cheap! You might help these guys out with source and switch # The only down side to not using the relay circuit is if you have blower circuit failure you could have a fire. ---
**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:** [October 30, 2015, 6:47pm UTC](https://community.electricforum.com/t/heater-switch/5500/16 "2015-10-30T18:47:08Z")
Correct, same goes for the relay circuit though. Unless there is a high temperature limit in the heater that cuts power to relay if over heated. I didn’t see one in diagram. I could be part of the element. I bet one out of a clothes dryer would work. If you think a toggle switch properly rated would work, I’ll post a link. ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [October 30, 2015, 7:08pm UTC](https://community.electricforum.com/t/heater-switch/5500/17 "2015-10-30T19:08:31Z")
I will work ---
**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:** [October 30, 2015, 7:45pm UTC](https://community.electricforum.com/t/heater-switch/5500/18 "2015-10-30T19:45:34Z")
My bad! The dc rating was off the screen.:o I just saw the 125 volt rating. ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [October 30, 2015, 7:49pm UTC](https://community.electricforum.com/t/heater-switch/5500/19 "2015-10-30T19:49:38Z")
Yeah DC is a toughy and were back to requiring the relay ---
**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:** [November 1, 2015, 12:28pm UTC](https://community.electricforum.com/t/heater-switch/5500/20 "2015-11-01T12:28:48Z")
Is this the part? #12 The ugly switch is the only one found so far with a 125vdc 20A rating.:o [Next page](https://community.electricforum.com/t/heater-switch/5500.md?page=2)