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Old 08-17-2022, 06:38 PM   #1
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Kwikee electric step. Tap pwr from coach or engine batt?

1996 Coachmen Catalina. class c. 22'
I'm wiring a new electric step. The old step was manual. Should I tap power from the coach battery or the engine battery ? I can't seem to find a consistent answer ?
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Old 08-17-2022, 06:56 PM   #2
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Mine is connected to the chassis battery via the BCC
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Old 08-17-2022, 07:01 PM   #3
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Do you have a step model number?

Class A , Kwikee steps have 3 fuses and auto retract feature linked to the ignition switch and door open override.
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Old 08-17-2022, 10:46 PM   #4
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Quote:
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Do you have a step model number?

Class A , Kwikee steps have 3 fuses and auto retract feature linked to the ignition switch and door open override.
It can't think of the model right now. It's a two step with light. It's grounded to the chassis and has a 4 wire pigtail. 1)Power, 2)mag switch for door, 3)on-off switch which is overridden by, 4)wire connection going to the ignition switch.
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Old 08-17-2022, 10:55 PM   #5
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Mine is wired to the chassis battery...presumably so when the house battery disconnect is off, the steps still actuate when you open the door.
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Old 08-18-2022, 12:28 AM   #6
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On ours, the step switch by the door, in the on position, lets the steps move in and out every time the door is opened and closed.

In the off position, the steps go out the first time the door is opened and then stay out even when the door is closed.

No matter what position the step switch is in, turning the ignition key to "run" causes the steps to retract if the door is closed.

A good indication that the steps are on the chassis battery.
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Old 08-18-2022, 10:57 PM   #7
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Chassis battery. You want the step to properly auto retract (or manual retract) before you drive off, even if you killed the house battery.

I know Winnebago wires the steps and slides to the chassis.

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Old 08-19-2022, 10:46 PM   #8
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Coach Battery to 12vdc circuit breaker to step. Depending on your coach/rig, you may prefer on switched side of battery switch, or maybe on battery side?
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Old 08-20-2022, 05:29 AM   #9
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Most modern coaches have the steps interlocked, for rather obvious safety reasons, to the ignition.

The harness is available on Amazon, and elsewhere.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 08-20-2022, 12:08 PM   #10
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Quote:
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Most modern coaches have the steps interlocked, for rather obvious safety reasons, to the ignition.

The harness is available on Amazon, and elsewhere.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
So did you connect to house or engine battery ?
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Old 08-21-2022, 03:18 AM   #11
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They steps were wired from the factory. So I didn't need to choose. I was doing some troubleshooting that ended up being related to the Chassis interlock signal.

On my coach the steps are on the Coach and not the Chassis electrical systems. The only part that is on the Chassis system would be the interlock signal. In the long run you probably have as good a chance that your Chassis batteries will die as you do that the Coach batteries will.

If Coach power is not reliable, then you could always come up with a emergency override switch. Assuming your Chassis system is in good condition. In my experience you will have more significant electrical problems before you reach that point.
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Old 08-21-2022, 08:54 AM   #12
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Quote:
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No matter what position the step switch is in, turning the ignition key to "run" causes the steps to retract if the door is closed.
This is precisely why I highly recommend wiring the step to the chassis including the chassis battery. You don't want to accidentally drive off with the step extended.

This wiring method has saved me many times.
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Old 08-21-2022, 09:04 AM   #13
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No chance of driving off with steps extended if your override system is functional. Not sure if the older coaches had that feature. Last 3 RV's, since 2015, have had the override feature. Prior to that the steps on our 5th wheel were manual, that was definitely a possibility if not paying attention.
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Old 08-22-2022, 05:20 PM   #14
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Quote:
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No chance of driving off with steps extended if your override system is functional. Not sure if the older coaches had that feature. Last 3 RV's, since 2015, have had the override feature. Prior to that the steps on our 5th wheel were manual, that was definitely a possibility if not paying attention.
My 1985 has the ignition override so it's been available for quite some time.
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