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Old 05-17-2022, 06:09 AM   #1
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Battery disconnect

Glad to have a Jayco Seneca after years of dreaming about it! 2016 36FK. The battery disconnect by the stairs was not functional when purchased last week. I would like to use the same switch and replace the relay. I have located a 500 Amp relay but was wondering if anyone else has done a similar fix?

Also if anyone can point out which relay is the one powered by the switch bt the stairs... I surely can find it but it will take me a bit of time.
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Old 05-17-2022, 07:39 PM   #2
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Mine is in the battery compartmen….16HJ

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Originally Posted by Mechmann View Post
Glad to have a Jayco Seneca after years of dreaming about it! 2016 36FK. The battery disconnect by the stairs was not functional when purchased last week. I would like to use the same switch and replace the relay. I have located a 500 Amp relay but was wondering if anyone else has done a similar fix?

Also if anyone can point out which relay is the one powered by the switch bt the stairs... I surely can find it but it will take me a bit of time.
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Old 05-17-2022, 07:58 PM   #3
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Your relay may not be bad. If the previous owner held down the switch too long it locks out the relay. See the following for how to reset.
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Old 05-17-2022, 08:16 PM   #4
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Thanks for the responses!
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Old 05-18-2022, 03:41 AM   #5
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Be very careful in which solenoid (relay) you buy, as it needs to be a specific type in order for the momentary (1 second) press of the switch to operate. On the class C forum, there are threads as to which solenoid you need to buy if yours is found to be faulty.

Look at the pics in post #5 of this thread:

https://www.jaycoowners.com/forums/f...tch-93777.html

member craigrv was great in setting me up with this correct solenoid replacement. Mine was missing altogether from a previous owner removing it because it was faulty.
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Old 05-18-2022, 05:59 AM   #6
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RustyNuts provided a post awhile back and provided this source:

https://pdxrvwholesale.com/products/...ay-lr9806j-bip

Unfortunately, they are out of stock. I heeded RustNut's advise and I now carry a spare.
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Old 05-19-2022, 03:46 AM   #7
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That's the one. They are available on other sites, but for 10 to 40 dollars more!
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Old 05-19-2022, 07:56 PM   #8
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Welcome to the family of Seneca that are on the M2 chassis and on the FK floorplan... we are a small but special group...

I want to agree with those who spoke up already... Try to reset the disconnect relay first, before going to the trouble of replacing it. If you need to replace it, then make sure it is the correct one.

I'll post pictures below, the relay on the left (In a 2015 FK) is the house disconnect relay, the one on the right is the Battery Isolation Relay (BIM)
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Old 05-24-2022, 02:06 PM   #9
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Quote:
Originally Posted by SloPoke View Post
Welcome to the family of Seneca that are on the M2 chassis and on the FK floorplan... we are a small but special group...

I want to agree with those who spoke up already... Try to reset the disconnect relay first, before going to the trouble of replacing it. If you need to replace it, then make sure it is the correct one.

I'll post pictures below, the relay on the left (In a 2015 FK) is the house disconnect relay, the one on the right is the Battery Isolation Relay (BIM)
Thank you for your response.

My problem is I don't know what exactly is isolated by the disconnect, maybe my expectations are way off.

On my toy hauler trailer the battery disconnect completely killed all power or draw from batteries. I cannot figure out what this disconnect actually isolates. It appears to be nothing.

In the event that this disconnect DOES work it looks to me that the chassis batteries would then feed the coach via the BIM. There is one +12v line that goes from the disconnect but I am not sure where it actually goes (not Inverter, not water pump, not sure what it connects to)

An electrical schematic would really help but I understand nobody has one because there isn't one. LOL
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Old 05-24-2022, 06:45 PM   #10
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This is not for the year you have, but it is "almost" perfect in relation to our 2015 FK..
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