Dtret Posted January 20, 2022 Share Posted January 20, 2022 My rear defroster works on hi and not on low. Not being an electrical savant, I jumped the resistor and the low works. So I now have 3 defrost switches that don’t work because of bad resistors. My question is what do I use for a resistor. The picture shows the ceramic (?) resistor. I’m looking to buy 3 of them to fix all the switches. Thanks. Quote Link to comment Share on other sites More sharing options...
Dtret Posted January 23, 2022 Author Share Posted January 23, 2022 Done Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted January 23, 2022 Share Posted January 23, 2022 What did you wind up doing? Quote Link to comment Share on other sites More sharing options...
Dtret Posted January 23, 2022 Author Share Posted January 23, 2022 Replaced the resistor 1 Quote Link to comment Share on other sites More sharing options...
71MonteCarloMD Posted January 23, 2022 Share Posted January 23, 2022 4 hours ago, Dtret said: Replaced the resistor Where did you get them? Quote Link to comment Share on other sites More sharing options...
Dtret Posted January 23, 2022 Author Share Posted January 23, 2022 A local electronics repair store. 1 Quote Link to comment Share on other sites More sharing options...
willie Posted January 24, 2022 Share Posted January 24, 2022 Dennis maybe you can tell us from where you bought the resister, the brand and part number just in case someone needs it in the future. I for one never checked mine yet. LOL Quote Link to comment Share on other sites More sharing options...
Dtret Posted January 24, 2022 Author Share Posted January 24, 2022 I’m staying real vague on this because I do not want to post incorrect information. Until the defogger actually gets used ( right now it works perfectly) I won’t know if I calculated the correct watt / ohms. BUT here is what I went with. 5 watt 5 ohm wirewound ceramic resistor. It fits perfectly in position on the switch. The only thing that concerns me, and also the old man at the electronics repair center, is the age and wear and tear on the 50 year old motor. I paid 10 bucks for two resistors. After I knew it would work Karen ordered a 10 pack on Amazon for 9 bucks. Quote Link to comment Share on other sites More sharing options...
jft69z Posted January 24, 2022 Share Posted January 24, 2022 1 hour ago, Dtret said: After I knew it would work Karen ordered a 10 pack on Amazon for 9 bucks. Ten pack? Plan on doing a lot of winter driving, 🤣? Quote Link to comment Share on other sites More sharing options...
Dtret Posted January 24, 2022 Author Share Posted January 24, 2022 27 minutes ago, jft69z said: Ten pack? Plan on doing a lot of winter driving, 🤣? As long as they don’t use salt. So no. I paid less for 10 than I paid for the two. I still have one more switch to fix. I’ll put the rest “ in stock “. lol 1 1 Quote Link to comment Share on other sites More sharing options...
willie Posted January 24, 2022 Share Posted January 24, 2022 Tkx for the heads up and info Dennis. Next time i start the car i will check the defogger to make sure it works. Quote Link to comment Share on other sites More sharing options...
Dtret Posted January 27, 2022 Author Share Posted January 27, 2022 Amazon 1 Quote Link to comment Share on other sites More sharing options...
71SSclone Posted May 13, 2022 Share Posted May 13, 2022 Interesting. I wonder if this is what I need for my rear defrost. I'll have to remember this when I get my car back Quote Link to comment Share on other sites More sharing options...
Dtret Posted May 13, 2022 Author Share Posted May 13, 2022 19 minutes ago, 71SSclone said: Interesting. I wonder if this is what I need for my rear defrost. I'll have to remember this when I get my car back Hook that window switch up to it and see if it works. It’s kinda the same but it won’t have hi and low speed. The resistor just drops the voltage so low speed works. Hi should always work if all parts are good. 1 Quote Link to comment Share on other sites More sharing options...
71SSclone Posted May 14, 2022 Share Posted May 14, 2022 I hooked the defroster blower motor up to the battery and it worked. The rear defrost was not connected to the capacitor(?) located behind the rear seat. I really paid no attention to it when I gutted the interior. Just something else to figure out on re-assembly. 1 Quote Link to comment Share on other sites More sharing options...
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