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Old 10-10-2024, 10:52 PM   #21
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Ok need help. The other night when I eliminated my door buzzers and shut offs at the back doors one of the wires sparked when I grounded it to the body. Now tonight it won't start? Acts like the battery is dead. Did I wire it up wrong? I shut it off and started it half a dozen times after I finished wiring it.

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Old 10-11-2024, 06:13 AM   #22
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Most likely blew a fuse. Was there more then two wires at the back door? Modern buses have two circuits, one is live as it controls the buzzer that let's you know the door is open, and the other becomes live only when starting/running and is an ignition interupt.
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Old 10-11-2024, 01:09 PM   #23
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Thanks Ronnie. Yeah there was like 4 wires. I put the battery charger on it and it cranks over, still not enough power to start it up yet. I'll wait a few hours. Could I have wired the door ignition interrupt wrong and it is creating a draw?
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Old 10-11-2024, 01:42 PM   #24
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Thanks Ronnie. Yeah there was like 4 wires. I put the battery charger on it and it cranks over, still not enough power to start it up yet. I'll wait a few hours. Could I have wired the door ignition interrupt wrong and it is creating a draw?
The ECM will draw power always. Buses were designed to be driven daily which would allow the alternator to keep them charged more than they would drain. Now it's not in service which it isn't designed to do which is sit and only be cranked once every few days or longer. This is why battery disconnects are recommended to be added so they can sit, when not used and not quickly kill your battery from vampiric devices.
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Old 10-11-2024, 03:28 PM   #25
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I don't think my bus has an ecm? It's all mechanical as far as I know. Also I have let it sit for weeks at a time and it fires right up. I'm just afraid I wired something up wrong and it is causing a draw that will run the battery down if I'm not starting it every day.

I started pulling the wiring conduit off so I can trace all the wires front to back. I would like to remove the whole emergency door/ignition lockout system.

Does anyone have a wiring diagram for a 1988 s1800 international bus?

Thanks everyone for your input and advice
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Old 10-11-2024, 06:22 PM   #26
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Thanks Ronnie. Yeah there was like 4 wires. I put the battery charger on it and it cranks over, still not enough power to start it up yet. I'll wait a few hours. Could I have wired the door ignition interrupt wrong and it is creating a draw?

I believe with the ignition off there should not be any power in the circuit, but check it because if you did cross some wires then yes it could drain the battery. I too vote for disconnecting the whole circuit.
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Old 10-11-2024, 07:13 PM   #27
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I don't think my bus has an ecm? It's all mechanical as far as I know. Also I have let it sit for weeks at a time and it fires right up. I'm just afraid I wired something up wrong and it is causing a draw that will run the battery down if I'm not starting it every day.

I started pulling the wiring conduit off so I can trace all the wires front to back. I would like to remove the whole emergency door/ignition lockout system.

Does anyone have a wiring diagram for a 1988 s1800 international bus?

Thanks everyone for your input and advice
You're right, I'm batting 1000 today in misreads.

All mechanical doesn't have an ECM. So likely it's more related to an accessory, either added or factory installed.

Best thing I would do is trace all small wires if any from the positive terminal of the battery, if there is anything branching off (There will be) then follow to see if it's something that could be drained.
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Old 10-11-2024, 10:12 PM   #28
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After putting the cables to it it started up. Worked on exposing the wires that go to the back. Eliminated the stereo and wires to the speakers. Going to keep stripping panels off and get everything exposed.
Also found a manual for a 1981 international that has wiring diagrams. Hopefully it is close
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Old 10-12-2024, 08:51 AM   #29
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No x2 to tandems. If you have air brakes, find a single axle with an air locker.

From years of driving on mines, less drive axles is better. Unlocked, the wimpiest tandem wheel spins out and you're stuck. Locked, you go in a straight line and steering is ineffective.

Same with such a short wheelbase on pavement, one of the tandems scrub in turns, wearing that set out much faster and decreasing your turning ability.
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Old 10-12-2024, 01:52 PM   #30
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I appreciate your input. Thanks. Well maybe a 4wheel drive front axle?
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Old 10-14-2024, 11:48 AM   #31
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Recent progress. Wiring looks messy but not going to do anything with it yet. Mostly just been working on the roof panels.
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Old 10-18-2024, 05:31 PM   #32
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Well I let it sit for like 4 days and it fired up. A light or something must have got left on? Won't be much progress for the next few weeks as I have to get it ready to take the kids trigger treating in it.
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Old 10-18-2024, 08:27 PM   #33
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...have to get it ready to take the kids trigger treating in it.
...sounds dangerous - hope no one gets hurt!
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Old 10-30-2024, 06:53 PM   #34
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A lil paint work.
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Old 10-30-2024, 06:54 PM   #35
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whatever it is what it is
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