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10-28-2020, 01:30 AM | #1 |
Senior Member
Join Date: Jul 2008
Location: kennewick, WA
Posts: 1,466
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A/C blower motor relay
Excuse my ignorance, this thought just came to me and didn’t find anything In a search.
Is there any benefit to replacing the AC blower motor relay with a Bosch style SPST relay?
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1965 c/10 swb 1969 c/10 lwb |
10-28-2020, 10:09 PM | #2 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: A/C blower motor relay
They both work in the same manner so as far as one better than the other I doubt it other than the fact your talking 50 years of technology.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
10-29-2020, 07:22 PM | #3 |
Senior Member
Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,563
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Re: A/C blower motor relay
I trust a 50 year old relay to work another 50 years and probably outlast a new Chinese relay. GMC Pauls sells a USA made replacement relay for that position.
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10-29-2020, 09:23 PM | #4 |
Senior Member
Join Date: Jul 2008
Location: kennewick, WA
Posts: 1,466
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Re: A/C blower motor relay
Sounds good, I know the brown wires on the AC systems are notorious for getting hot and didn’t know if by adding a Bosch style relay if that would alleviate that problem.
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1965 c/10 swb 1969 c/10 lwb |
10-29-2020, 09:57 PM | #5 |
Senior Member
Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,563
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Re: A/C blower motor relay
Well since the relay is used for the high speed fan position, I would expect the brown wire would run nice and cool with the fan on high speed. Perhaps it could be warm in the low and medium speed positions. I haven't heard of the notorious hot brown wire before, but I know my fan switch connector was melted and fan switch was bad before I replaced those 2 parts.
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