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Blower Motor Relay |
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CamJam
Moderator Group Joined: Jan/04/2014 Location: Arizona Status: Offline Points: 6553 |
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Posted: Jun/03/2015 at 7:21am |
I see references made to a blower motor relay on a/c cars. This seems to be separate from the resistor box mounted on the firewall above the blower motor. Can anyone tell me where this mounts or perhaps share a photo of it? Thanks!
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'73 Javelin 360 (current project)
'72 Baja Bronze Javelin SST '69 Big Bad Orange AMX (2018 Teague Heritage Award) SOLD |
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401MATCOUPE
AMC Addicted Joined: May/20/2010 Location: Salisbury, MD Status: Offline Points: 5367 |
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Cameron,
Blower Motor relays are only on later cars then yours. a 69 AMX/Javelin only has the resistor "cage". 68 cars had open resistors mounted below the blower motor with a pin style connector...it was a good change they made in 69!! |
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Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar) 68X,GoPac,390,4sp,52A 69X,GoPac,390,4sp,64A 70X,GoPac,390,4sp,87A,8 70X,GoPac,390,4sp,BBO,8 70 Jav SST,390,AT,BSO 74MatX,401,AT,Prototype 74MatX,401,AT |
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CamJam
Moderator Group Joined: Jan/04/2014 Location: Arizona Status: Offline Points: 6553 |
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Thanks Ross! I was hoping it was for the later cars. Looks like I might have everything I need lined up then. :-)
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'73 Javelin 360 (current project)
'72 Baja Bronze Javelin SST '69 Big Bad Orange AMX (2018 Teague Heritage Award) SOLD |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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How good is your resistor as far as appearance, lack of rust or oxide, etc.?
They can be refurbished in SOME cases...... this one was really rough, the terminals oxidized, the shell starting to corrode. The terminals here were replated with tin/zinc for good conductivity and corrosion protection and the shell was plated as well. It could be finished a more dull finish, or polished if someone wanted it OVER-done. |
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CamJam
Moderator Group Joined: Jan/04/2014 Location: Arizona Status: Offline Points: 6553 |
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Mine cleaned up pretty easily with a wire brush. Looks more or less like the one in your photo now.
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'73 Javelin 360 (current project)
'72 Baja Bronze Javelin SST '69 Big Bad Orange AMX (2018 Teague Heritage Award) SOLD |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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Good. Sometimes that is about all it takes.
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S Curry
AMC Addicted Joined: Aug/16/2012 Location: Iowa Status: Offline Points: 598 |
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Anybody check the resistance value on the 2 resistors? I don't have one of these factory resistor pack on my 70, I have a couple of resistor sets that I think I can make a close copy. Just gotta to know the correct values for starts.
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SC
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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They are more current limiters, more like a ballast resistor. They heat up and the more load, the more heat and more resistance. You won't get much resistance at all using a VOM. What little "current" a vom would present would pass easily.
You could measure voltage drop across the terminals with the fan running but it still won't be quite the same. You'd have to also watch the rated value of any resistor you were going to use. A wire-wound would fair better than a typical carbon resistor. There's going to be some amperage through it - and heat generated That's why these are wire and vented. The EEs here can tell me how right or wrong I am, or if I'm even close. (EE = electronic engineer) These come up on eBay not all that infrequently and someone here is likely parting a Javelin or AMX that has one.
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DoughertyAMX
Supporter of TheAMCForum Joined: Sep/20/2016 Location: Washington, Ind Status: Offline Points: 519 |
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Getting ready to apply some elbow grease to my blower resistor. Any secrets on what to use, or just elbow grease, scotch brite pad, and all purpose cleaner? Figure I would clear the housing when done.
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304-dude
AMC Addicted Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9082 |
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If you are looking at late blower resistors for 71 to 74 Javelins, thry are robust. All you need to do is clean them good. I have my original and the original owner replaced the blower motor before I bought the car. So them resistors will outlast a blower motor or two.
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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