I just installed in parallel a 2nd house battery 12 v deep cycle. Ran positive feed cable to 1st battery & negative feed cable to 2nd battery per online videos. + to + and - to - cables between the two batteries. But now the main power switch in the coach will not turn off but stays on constantly. Any assistance will be appreciated. Thanks.
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OK gjirwin, I've found your post so you don't have to worry about starting a new one , but as I mentioned in the PM, photos would help , I'll track down the info I have on the usual coach battery disconnect relay and post it here.
If your coach battery disconnect relay is mounted as part of a BCC ( Battery Control Center) important to test all the fuses there , and if that's where it is please post a photo of that too. I have info on MINI BCCs and full size ones.
Page 7 of this document has a photo of the disconnect relay , fuses are next to the cable posts on each side.
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Storage compartment just behind slide out battery compartment. 1/2 plywood on bottom of compartment to distribute weight and vented holes thru side to pass thru parallel batt cables AND for ventilation.
2015 Jayco Greyhawk 29MV 2nd house battery install issue
Issue resolved. Many thanks to Skip426 for pointing me in the right direction. The parallel install of 2nd house battery was hooked up correctly. But I found that the battery disconnect relay (Part no. LR9806JBIP for anyone else needing to replace) was broken, apparently by the battery cables on slide out tray looping around the relay and then breaking it when the slide tray was reopened. Will have to be very careful in future when opening & closing slide out tray for aux batt #1. May try to construct something to protect relay & prevent cables from looping around it.
One final thought in reading around online on parallel house battery installation, couple of website videos commented that the most common mistake in parallel cabling is to leave both the pos & the neg/ground feed cables on batt # 1. To complete the parallel circuitry & to allow both aux batts to charge & discharge evenly, the pos feed (from RV) cable should be on one battery and the neg/ground feed cable on the other aux battery with the + to + & - to - cables connected in parallel between the 2 aux batteries.
Linear Mode
