Recent Posts

1

Technical Support / Re: Steering Column Cover removal

« Last post by RogerMilne on December 04, 2025, 11:04:08 PM »

Hey Steve,

Spent some time going back and forth over all the schematics.

So, I've pretty much dialed in on the 2 possible sources of issue, but wanted get your input and then when I get home next week I can actually do continuity checks through the points on the circuitry.

I need to know about this DRLM module. It's at the end of the low beam circuit and feeds back to appropriate fuses, but what does this look like on the original RV. (as I stated in an earlier post the PO did some crazy wiring for a light bar) BUT I have a DRLM connector hanging in the forward bay area. So I can eliminate the circuitry would the original DRLM module have been something it plugged into on the headlamp unit and fed both headlights or a module attached to the firewall feeding the headlights. From what I can see in the schematic as long as its unplugged from the Lo Beam circuits it shouldn't interfere with normal ops'. But I just want to put that circuit to rest.

The most glaring issue is the F#69 fuse circuit. It feeds to R11 then to VCE1 which states it goes to HR1-30 Hi/Lo switch. I can check the continuity for the F69 to R11 to VCE1 easy enough BUT this Hi/Lo switch HR1-30 What and where is this?? Is this the "Dimmer Switch" on the steering column or something else.

I think if I can trace this circuit back to the HR1-30 switch I may have my problem narrowed down.

Thaks for the help.

2

General Discussion / Re: 2009 Beaver Marquis amethyst, cat C 15 engine, 45 feet

« Last post by Steve Huber on December 04, 2025, 08:19:00 PM »

Mike
Carl's advice is right on. Looking at the 08 Contessa wiring diagram (probably close to the 09 Marquis) it shows the following lights on the parking light circuit and fed by a single daisy chained source:
•   Top left light cluster
•   License plate
•   Bottom left light cluster
•   Clearance lights
•   Top right light cluster
•   Bottom  right light cluster
Whats not clear is why both front lights would be out as the diagram shows each are fed by a separate wire in the daisy chain. So as Carl suggested, start at the bulbs and trace back looking for a bad/broken connection. Also check the bulbs and sockets. Coach Assist has an 09 Marquis wiring diagram but I can't access it as I'm limited to what I've saved on my PC. Let us know what you find.
Steve

3

Technical Support / Re: Steering Column Cover removal

« Last post by Steve Huber on December 04, 2025, 02:05:07 PM »

Roger,
Source and destination of VC connections vary. They are shown in the 07 & 08 Contessa Wiring diagrams in Coach Assist. The Front Elec Bay PCB Conn Pinouts (Vehicle Cabin - CB Connector Pin-Out) shows where each pin on each PCB connects to. The 07 Contessa Specific Front Elec Bay PCB Block Diagram shows a schematic diagram of each VC connector so you can see both input and output.
Steve

4

Technical Support / Re: Steering Column Cover removal

« Last post by RogerMilne on December 04, 2025, 07:07:17 AM »

Thanks Steve.
I’m actually heading back to work for a few days Thur so won’t get to it until next week. I have a quick question regarding the VC connectors and the main circuit boards. Am I correct to assume that the plug connectors are coming from downstream ie they are coming from the end of the circuit component and the circuit board side of things is going upstream to the switching and power sources?? I’m guessing if I want to check continuity from the terminal connectors at the base of the steering column I would check from there to the pins on the circuit board and then check from the connector to the headlight connector?
Thanks. Again for your continued advice.

5

Technical Support / Re: Steering Column Cover removal

« Last post by Steve Huber on December 03, 2025, 01:26:10 PM »

Roger,
Look at the headlight diagram. There are 2 circuits that feed the high and low beam headlights. One is through the dimmer switch. so what you are describing is normal. The other circuit is from the VIP wheel. It controls R10 which also feeds the headlights. So it sounds like your issue may be nearer the headlights because what you described seems normal.
It's dwg 38085026.
Steve

6

General Discussion / Re: 2009 Beaver Marquis amethyst, cat C 15 engine, 45 feet

« Last post by Carl Boger on December 02, 2025, 11:38:51 PM »

The fuse is likely a resetable breaker in the front electrical bay, but I doubt that it is your problem since the other lights are working.  I would start by tracing the wires back from the lights to see if there are any broken wires, or maybe first to verify that the bulbs are not burned out.  You likely have a bad wire connection, bad ground, or broken wire.

7

Technical Support / Re: Steering Column Cover removal

« Last post by RogerMilne on December 02, 2025, 08:21:10 PM »

Been a while due to work schedules and holidays etc.

But wanted to update the problem with no Lo Beam ( blows fuse#69 ) when plugged in to circuit.

So we have continuity through the steering column Dimmer switch and can cycle Hi to Lo beam and get continuity to terminal connectors at base of steering column. So I'm taking the dimmer switch out of the equation as it seems to work as intended.
I just tested R-11 relay and its functioning as intended.

I'm now getting a little confused as to the circuitry as it appears to be running in parallel with a sub-circuit being powered by the VIP switch on the steering wheel?
Looking at the schematics, I see pin 87 is open and 87a is closed and feeding the dimmer switch. Only when the the VIP switch is pressed does the power switch across the 87 and 87a pins. But the Hi and Lo beam are still only activated using the dimmer switch.

So am I making this too complicated? I need to figure out how to test circuit continuity from VCB 11 to the headlight connector but it looks like it's not a hot circuit unless the VIP switch AND the Dimmer switch are in agreement.

I still have an open circuit due to me pulling apart the terminal connector at the steering column so I don't blow fuse #69, but is the circuitry from the dimmer switch going to R-11 relay first or VCB connector.??

I'm wondering if I pull the VCB connector out and select Lo beam if it will blow the fuse or not. At least them I'm getting further downstream to where I may have a short?

Thanks for the help.

8

General Discussion / 2009 Beaver Marquis amethyst, cat C 15 engine, 45 feet

« Last post by Mike DeFrees on December 02, 2025, 02:51:51 PM »

I’m having trouble with my front parking lights, stopped working and I cannot find the fuse. All of my marker lights and tail light are working when the parking lights are turned on. But my front parking lights are not working. Can anyone help me in finding the fuse location or Relay to check?

9

Technical Support / Re: Water Pump relays, switches, and wiring 99-2001 Marquis

« Last post by Eric Drickersen on November 30, 2025, 08:52:06 PM »

Thank you Fred! Your guidance has been super helpful in getting my marquis functional. I am using your schematic to trouble shoot my water system. As I had previously mentioned, the confusing part is that I there is a loss of 12v current somewhere between the breaker (located in the closet) and the relays. I am also getting a 10v reading on the ground bus. Based on our conversations, I have decided to start with replacing the two relays while also tracking down the cable run between the breaker and relays.

10

Technical Support / Re: Big slide doesn't extend, leveling system inop.

« Last post by Nicholas Soldevere on November 30, 2025, 02:36:51 PM »

Nicholas
Glad to hear you got it fixed.

Eric

Yessir Eric, put the new chassis fuse in there and it all started working. So, pump solenoid, solenoid grd wire, chassis 250A fuse. 

The grd post on the pump solenoid was pretty heavily corroded. Built up resistance and burned up the cable. Somehow this took out the chassis 250A fuse in the battery compartment. I still don't understand why it didn't take its own fuse out, but, whatever.

Thanks again to you guys for all your help!!