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Old 04-16-2016, 08:47 AM   #15
Senior Member
Join Date: Feb 2010
Posts: 4,278
Steps have 2 hot leads and possibly 3

One is to battery or constant power (after disconnect switch) and this one carries operating current.

The second one goes to ign power and is a sense lead that tells controller key is on.

This overrides the manual operator switch so steps come up when engine is started.

That operator switch may also be a voltage source but too early to remember...Others will comment on it though.

Get a copy of the manual for your step to confirm what power needs are then confirm where connected.

It could be plugged into wrong place.

Tony & Lori
1989 Country Coach Savannah SE
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Old 04-18-2016, 06:46 AM   #16
Junior Member
Join Date: Jun 2012
Posts: 10
Problem Resolved

I completely remove the frame/bracket where the fuse block and terminal blocks are installed to trace the wires for the steps. From what I could tell all the wiring was correct. I couldn't understand why the fuse for the steps labeled STEP MTR PWR 20 AMP didn't work but the one labeled RADIO POWER AUX 10 AMP did because the wiring traced to the correct fuses. So I put everything back together. I reran the test by pulling the STEP fuse to see if the steps would still work. I was surprised that the steps didn't work this time with the correct fuse pulled. So I put the fuse back in and removed the 10 AMP fuse and it had no effect on the steps. Before the steps would not work if this fuse was pulled or blown but now it had no effect on the steps. So I continued testing to see if I could blow the 10 AMP fuse and I could not. To my surprise it looked like everything was working. I'm thinking when the factory installed the fuse/terminal blocks they either pinched a wire or screwed one of the screws that holds the blocks in place into a wire that shorted the step's wire. But anyway it all seems to be working correctly now.

Thanks for everyone's help.

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