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Old 08-03-2018, 07:47 AM   #1
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75 dodge titan 12v help

So, when I turn the key I get no power to the motorhome at all, and when switching the house power to battery I get no reading on my voltage meter on any wires. I've checked fuses, I traced the positive wire from battery to the starter relay and got 12v reading there. Even replaced the starter relay, because it was very rusty, and still nothing.



After a bit of research I found they Winnebagos have a battery isolation solenoid. My questions are, does my titan have one, would it cause me to have no 12v power to both the engine side and house side, and about where on the chassis would I find it?


Right now my focus is trying to get the engine started so that I can drive it home.
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Old 08-03-2018, 08:00 AM   #2
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Isn't the purpose of the battery isolation to prevent the coach from draining the chassis battery? If the chassis battery is fully charged I would think the engine should start, solenoid or not. Have you considered the ignition switch as the culprit?
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Old 08-03-2018, 08:33 AM   #3
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It has crossed my mind, but even with the ignition switch off I still should get power to the house. The thing that's confusing me is that there is no separation between the house and chassis batteries, it's just pop in 3 batteries in parallel and call it good
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Old 08-03-2018, 08:51 AM   #4
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Do the headlights or horn work ? Could be a broken or corroded wire from the starter to the fuse block. Check the large stud on the alternator for power . You should have 12 volts there. You could try checking the fuse block for voltage as well.
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Old 08-03-2018, 09:40 AM   #5
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No horn, lights, or power to the fuse box, I think I'll see if I can find the wire. Also think that if I can disconnect the starter switch I'll try to jump the terminals and see if it'll start that way
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