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Old 02-15-2021, 12:47 PM   #1
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2021 E-450 Charge Solenoid Location

Does anyone know where the Charge Solenoid is on a 2021 E-450 Cutaway chassis? I have found the Battery Disconnect Solenoid (stair step well) and what appears to be the Auxiliary Start Solenoid (cowling mounter on rt side of engine). Looked under coolant reservoir and battery, but didn’t see anything or large diameter battery cables in those areas. Also, are there E-450 Cutaway chassis wiring schematics available? I assume that is is factory mounted?
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Old 02-15-2021, 01:15 PM   #2
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Quote:
Originally Posted by Civrel View Post
Does anyone know where the Charge Solenoid is on a 2021 E-450 Cutaway chassis? I have found the Battery Disconnect Solenoid (stair step well) and what appears to be the Auxiliary Start Solenoid (cowling mounter on rt side of engine). Looked under coolant reservoir and battery, but didn’t see anything or large diameter battery cables in those areas. Also, are there E-450 Cutaway chassis wiring schematics available? I assume that is is factory mounted?
If you are referring to a Battery Relay/Isolator/Contactor you won't find it on a Ford E-450 Cutaway chassis wiring schematic. All the components you are referring to are installed by the coach manufacturer. What you are looking for could be the "Auxiliary Start Solenoid" you reference. Do you not have a manual for the coach? Post some pictures of these items.
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Old 02-15-2021, 01:30 PM   #3
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Civrel-

If you have a battery boost switch in the coach, have someone throw that switch one way and then the other, while you walk around the outside of the coach and listen for the solenoid to open and close.
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2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
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Old 02-15-2021, 01:35 PM   #4
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Your aux start solenoid is the isolation solenoid. They use the one solenoid for both things.
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Old 02-15-2021, 01:43 PM   #5
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Your aux start solenoid is the isolation solenoid. They use the one solenoid for both things.
If what you found doesn't have battery size cables, that's not it.


The isolation/charge solenoid will be a RV builder item, not Ford.

My 2017 E450 chassis used a BIM 225.
Looks like this.Click image for larger version

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