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Need to find a similar switch to the one that previous mechanic used to bypass the heater blower controls at dash

Had replaced the alternator a few years ago and accidentally shorted something which caysed the radio and heater not to function properly. The radio will power on (the light anyways, but no display or sound and the heater blower speed wont work and was bypassed with a resistor switch? I think that's what it is. It has 2 post on the back and what looks like a long screw. The front of the knob has a brown knob that says "HEAT" and has 3 settings, off low and high. When on low the knob would get really hot and it actually shorted out I think but when on high it doesn't get hot. I need to find a switch like that or one similar that can do the job. The directional flow on the console works though (defrost, floor boards, et cetera) I would appreciate any thoughts and feedback!

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  • 11 more comments 
  • charles
    charles Dec 12, 2014

    that 3 speed switch is EXACTLY what Ineed nd yes, on low an med it got preety hot which is what most likely fried it but on high it was fine. I eed that switch with the resister built in andwold py for it plus shiping if one ca be found!. Thnks jfhinton45

  • charles
    charles Dec 12, 2014

    I will post a pic of it

  • charles
    charles Dec 12, 2014

    It is on iside drive side of console down near accelerator. Wires run into the blower box behind glove box



  • jfhinton45 Dec 12, 2014

    Is this just sitting there loose? Can you do any electrical testing on it? Like is here a power in point and three other connectors an if so can you test resistance between them all with the switch in OFF, and 1 2 and 3 ON positions. It is lookig tome like this swith is too small to have resistors built in for three fan speeds. In that case you likley are controlling current flow to a fan resistor somewhere else probably on the blower ca assembly. In that case if you have continuity through the power input conector and all other switch connectors one at a time as you move the switch selector know through its positions it maay not be the switch that is the problem so if you can start there that would be helpful. It is doubtful that if you have a switch with resistance built into it that it would be able to sit loose close to plastic or other flammable materila without melting something or starting a fire as the resistance would get VERY hot.

  • charles
    charles Dec 13, 2014

    This switch was (is) mounted to that plastic. It actually melted the side a bit from where it was mounted. Can the wires just be ran to the battery itself. the switch has 2 wires that run from the blower box behind the glove box. even if it just stays on, thats fine. Its cold here in Washington

  • charles
    charles Dec 13, 2014

    It is not loose. I have taken it off to take to the part/hardware stores. It does not work anymore and when the switch did work and was insatlled, the backyard mechanic guy said to keep it on high as the switch/knob will get hot otherwise. It has 3 settings basically, 1- off 2-low 3-high. the wires run from behind the glove box and have a few different connecters that may or may not have been there in the beginning. I am learning fast and appreciate the help. I will send a pic tomorrow/today of the connections behind the glovebox if needed. Thanks all!

  • jfhinton45 Dec 13, 2014

    Okay so it is a 2 speed not a three speed switch and I might have one but have not had time to go to a number of plqces to look. What year and make is the vehicle?

  • jfhinton45 Dec 13, 2014

    Additionally, how many wires are there connected to it, two or three? It is possible that the mechanic alread ran it from the battery to the switch but that would leave it running all the time unless the switch was turned off each timne the key was switched off which is somewhat more inconvenient than having the fan stop when the key is turned off. Can you test and see it one of the wires has power with the key on and not when off?

  • charles
    charles Dec 14, 2014

    It has two wires that run from the box to the switch. It is a three speed, off , low and high. I know my wife would turn it to low now that she confesed to it! That is what probably caused it to overheat side of the consule. The post up top seemed burnt and the cable that was ran was very brittle. Reminded me of the Deadlist Catch episode last season when the Northwestern had the elecrical panal issue with elctrical connection problem. I know I need something to flow the heat blower current but this worked and if it was left on 24/7 on high, there wouldnt have been a problem, No it shouldnt be like that but if you have idesa to help, I appreciate that!

  • jfhinton45 Dec 14, 2014

    Well, this is becoming a litle bit simpler as you advise more information. You have not yet advised what make and model the vehicle is though. If you only want one speed and you can advise that the wires are still good the solution now will be easy with easily found local parts but you need to fill in the last but of information now.

  • charles
    charles Dec 14, 2014

    My bad, been busy with a few things like us all im sue. It is a 1997 Lincol Continental and is completely computer brained and digital. The only buttons that operate on the dash console is the actual heat/ac vent fluctuator ie; changing vent to defrost or face or floor. Heat does come outminially without any fan of coarse. Thanks any more questions feel free to aks as I appreciate the responses

  • charles
    charles Dec 14, 2014

    Yes, even if it is cold as hell and has to be on high until it warms up and blows...We are ok with that. I can disconect if the weather warms! Thats what I am talking about bro! please!

  • charles
    charles Dec 14, 2014

    2 wires. run to switch. there are 2 "connection plugs" in the the compartment behind glove box like something was piggybacked or re routed maybe?

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  • Cars & Trucks Master
  • 14,161 Answers

TRY RADIO SHACK. MOST PEOPLE WHO BUILD PROJECTS LIKE SWITCHES GO TO RADIO SHACK. I HAD A SIMILAR PROBLEM AND THAT WORKED FOR ME. OR IF YOU WANT THE EXACT SWITCH THAT YOU HAD TRY A JUNK YARD LIKE LKQ, (352) 746-3011 IS THE CUSTOMER SERVICE NUMBER.
GOOD LUCK.

Posted on Dec 12, 2014

Testimonial: "went there, radio shack, auto zone, napa, lowes, ace hardware and they have no freaking clue. I even took the switch in lol"

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  • Cars & Trucks Master
  • 3,506 Answers

You will have to go back to the mechanic or shop that supplied it or take it out and start what may be a long and unsuccessful search at many electricla and electonics supply shops.

Posted on Dec 11, 2014

Testimonial: "Man..That so suck because this guy is now off grid! I know that the part that was installed worked ok until my wife tried to mess with it. My personal email is ceedubbya27@hotmail.com and any help is appreciated. The wires do run from the heater blower connections to this knob still. Is there any ideas to this and no need to post"

  • jfhinton45 Dec 12, 2014

    If you merely want/need a simple 3 position blower switch that should be a little simpler than what I thought you needed. I will look and see if I have one but what I am thinking of will be from about1960's and may not be 3 speed but two. If you have what I am thinking you might have you might have a switch with resistance built into it to give 3 fan speeds right in the switch rather than switching three cicuits wth resistances elsewhere in the circuitry. If this is so the switch would get hot in low, less so in medium and less yet in high speed because the low setting would be causing a loss of voltage to the fan to run slow speed by providing a resistance in the switch as it would also for medium but with less resistance therefore less heat and high fan little to no resistance to allow full system voltage to drive the fan as fast as it will go on that voltage.

  • jfhinton45 Dec 12, 2014

    anyway you can take a cell phone picture or pictures of it and where and how is it mounted.

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SOURCE: blower works. However, only at one speed: LOW. no matter if set at low, medium, or high.

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