Relay Ratings
12-04-2020, 08:51 AM
#1
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Year: 1996
Model: Cherokee (XJ)
Engine: 242 cui
Relay Ratings
I've looked at a lot of resources online and still can't get a real answer to this.
What marking on this relay reveals the amperage rating?
What marking on this relay reveals the amperage rating?
12-04-2020, 11:20 AM
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Year: 1989
Model: Comanche (MJ)
Engine: 4.0
I think 0611 is a date code meaning June 2011. It's a standard micro relay pinout and the SH111 looks up to a common 20-amp relay used for a/c clutches and radiator fans.
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318SixPack (12-04-2020)
12-04-2020, 11:46 AM
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Year: 1989
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No clue. Googling SH111 kept popping up a 4-seasons brand relay rated for 20-amps. Normally, the spec would be printed on it or at least a make/model to look it up. You looking to replace that one, or re-use that one elsewhere? Searching on "5-pin car micro relay" gets bunches of hits on Amazon.
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318SixPack (12-04-2020)
12-04-2020, 11:49 AM
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No clue. Googling SH111 kept popping up a 4-seasons brand relay rated for 20-amps. Normally, the spec would be printed on it or at least a make/model to look it up. You looking to replace that one, or re-use that one elsewhere? Searching on "5-pin car micro relay" gets bunches of hits on Amazon.
But nice to know for when a relay swap fixes something.
12-04-2020, 11:57 AM
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Looking at https://www.boschautoparts.com/en/au...s/micro-relays, your diagram looks like either 0986AH0307 or 0332201107.
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318SixPack (12-04-2020)
12-04-2020, 12:07 PM
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Looking at https://www.boschautoparts.com/en/au...s/micro-relays, your diagram looks like either 0986AH0307 or 0332201107.
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awg (12-04-2020)
12-04-2020, 12:48 PM
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Almost not worth the effort to scrounge at the junkyard unless you're already there. They're pretty cheap on Amazon. $10 for a set of 5 relays with wiring harnesses.
https://www.amazon.com/Support-Relay.../dp/B00RVCFNCK
https://www.amazon.com/Support-Relay...dp/B00RV9ZUEO/
https://www.amazon.com/Kohree-4-Pin-...p/B07XTB2Q91SA
https://www.amazon.com/Support-Relay.../dp/B00RVCFNCK
https://www.amazon.com/Support-Relay...dp/B00RV9ZUEO/
https://www.amazon.com/Kohree-4-Pin-...p/B07XTB2Q91SA
And I am not sure that I trust $2 relays.
Last edited by 318SixPack; 12-04-2020 at 04:16 PM.
12-04-2020, 06:25 PM
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Year: 96
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Me being an electronics weenie, I would probably try a variable speed motor controller like this one.
https://www.amazon.com/Generic-Pulse.../dp/B00M6Q8WZ6
or this
https://www.amazon.com/RioRand-7-80V.../dp/B071NQ5G71
https://www.amazon.com/Generic-Pulse.../dp/B00M6Q8WZ6
or this
https://www.amazon.com/RioRand-7-80V.../dp/B071NQ5G71
Have a 40A PWM for another project...adding A/C to a vehicle that came without
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318SixPack (12-04-2020)
12-04-2020, 07:47 PM
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Looking at https://www.boschautoparts.com/en/au...s/micro-relays, your diagram looks like either 0986AH0307 or 0332201107.
12-05-2020, 01:57 PM
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Year: 1998 Classic (I'll get it running soon....) and 02 Grand
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I'm not aware of any way to determine the amp rating of a relay other than by consulting the manufacturer's product literature.
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318SixPack (12-05-2020)
12-05-2020, 02:09 PM
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That is the same as what I am coming up with. And some of them the maker didn't leave a mark. As far as anything I have marked SH111, going to label them as 20A.
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