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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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  #1  
Old 05-17-2011, 12:31 PM
paulwroth paulwroth is offline
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tail light problems, 98 Motorhome chassis

My RV is supposed to be a 98, the VIN number says built 10/97. I need to find wiring diagrams because I am having issues with the tail / brake lights (and the tow hookup). It ahs a 460 gas engine.

Thanks

Paul
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Old 05-17-2011, 12:34 PM
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What is it, an F53 or a E350?
Class "A" or "C"?
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Old 05-17-2011, 12:50 PM
paulwroth paulwroth is offline
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The book I have says it is a 1997 F-Superduty Class A Motorhome chassis. It does say for additional information refer to 97 F-250 HD, F-350, F-Superduty Service manual. The VIN number starts with 3FCM.

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Old 05-17-2011, 01:03 PM
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It would be the 1997 F53 chassis then.
They did not make a 1998 F53.
What make is the Motorhome on the F53?

Does your dash lights come on when you turn on the headlights?
Does the dash turn lights (arrows) flash when turn them on?

Click the image to open in full size.

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95 F150 302 4R70W EB EX-CAB
94 F53 460 E4OD COACHMEN SANTARA RV
83 F150 Flare Side 351W AOD
77 F250 351M-2V NP 435/4 Speed 4X4
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Bill K, Kansas Chapter
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Old 05-17-2011, 01:34 PM
paulwroth paulwroth is offline
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It is a Newmar Mountain Aire, I think maybe they bought up some older chassis so that they could keep using the same design (with the tag axle) for a couple of years until ford changed to the single axle with the bigger wheels.
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Old 05-17-2011, 04:22 PM
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The wiring diagrams for the Ford part (F53) are above.
The rest was wired by Newmar.
Sorry I can not help you with that part.
The For wiring ends at about the back end of the fuel tank at a plug on the drivers frame.
Newmar plugged into that plug and wired the back end of the Motorhome.
The best I can do is post a photo of the plug where the Ford part ends if you want me too..
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Old 05-18-2011, 05:11 PM
paulwroth paulwroth is offline
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Bill,

I hadn't looked at it in a while and when I got out there the engine battery was dead so I had to charge it. The running (tail) lights and are working. I can't see if the dash lights are working, I'll look when it gets darker outside. When I turn on the left blinker, I can hear the flasher relay operating (which helped me find it) but the left indicator on the dash doesn't blink. When I turn on the right blinker I get nothing. The brake lights don't work but I am getting 12 volts on the output of the brake switch. When I turn on the hazard switch I don't get anything either.

Thanks

Paul
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Old 05-18-2011, 05:37 PM
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Check and make sure all the bulbs on the back end are good.
You may have rear bulbs out and one turn bulb out on the dash.
If they all good check the frame ground for the tail lamps.
I do not know where Newmar put it as I have a Coachmen and they are different.
Also check for rodent damage to wiring under along the drivers side frame.
If everything looks good you may have a bad Multi-Function Switch.
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95 F150 302 4R70W EB EX-CAB
94 F53 460 E4OD COACHMEN SANTARA RV
83 F150 Flare Side 351W AOD
77 F250 351M-2V NP 435/4 Speed 4X4
subford@gmail.com
Bill K, Kansas Chapter
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Old 05-18-2011, 05:50 PM
paulwroth paulwroth is offline
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It kind of looked to me like the multi function switch so that is what I am troubleshooting now. I'll head toward the bak next. Thanks for your help.
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Old 05-18-2011, 05:55 PM
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Does the high middle stop lamp work?
Its wiring does not go trough the Multi-Function Switch.
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95 F150 302 4R70W EB EX-CAB
94 F53 460 E4OD COACHMEN SANTARA RV
83 F150 Flare Side 351W AOD
77 F250 351M-2V NP 435/4 Speed 4X4
subford@gmail.com
Bill K, Kansas Chapter
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Old 05-19-2011, 04:08 AM
paulwroth paulwroth is offline
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The high middle switch doesn't work either whicch makes me think there is a connection problem. I'm goiing to see if I can figure out where all of the connections are. In the morning once it's daylight and the bugs are calmed down I'll see if I can find that connetor you mentioned.

Thanks

Paul
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Old 05-19-2011, 08:17 AM
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This might help:

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95 F150 302 4R70W EB EX-CAB
94 F53 460 E4OD COACHMEN SANTARA RV
83 F150 Flare Side 351W AOD
77 F250 351M-2V NP 435/4 Speed 4X4
subford@gmail.com
Bill K, Kansas Chapter
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Old 05-26-2011, 07:10 AM
paulwroth paulwroth is offline
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Troubleshooting

Well, I have been working on my leveling system problem but I finally got back onto the taillight issue. By cleaning the connector at the back of the fuel tank (the pins were very green) I got everything except my brake lights working. There is one pin in that connector that is hot with the brake depressed, but it is not wired off the other side of the connector so I guess it is not used. I went back to the multi funtion switch. I have 12v to the switch from the brakes on the light green wire, but I don't get it on the O/LB or the LG/O. I jumpered the LG (incooming voltage from brakes) to these wires and each lit up individually as I did that. I have cleaned the connector a couple of times with contact cleaner, so it looks like the problem is the multi-function switch. Do you know how to pull this? It looks like I just need the upper portion, but do you have to replace the whole thing?

Thanks

Paul
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  #14  
Old 05-26-2011, 07:51 AM
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Multi-Function Switch


Removal

1. Disconnect battery ground cable (14301).

2. Remove the steering column shroud (3530).

3. Remove two self-tapping screws that retain the multi-function switch (13K359) to the steering column tube casting. Disengage multi-function switch from casting.

4. CAUTION: Do not damage locking tabs or PRND21 cable.

Disconnect the two electrical connectors.

Multi-Function Switch, F-Super Duty Motorhome
Click the image to open in full size.
Click the image to open in full size.

Installation

1. Install the two switch electrical connectors to full engagement. The wiring for the switch is to be routed under the PRND21 cable.

2. Align the mounting holes on multi-function switch with the holes in the steering column tube casting. Install two self-tapping screws making sure to start the screws in the previously tapped holes. Tighten to 2-3 N-m (18-27 lb-in).

3. For automatic transmission (7003), verify that the PRND21 adjustment is correct.

4. Install the steering column shroud.

5. Note: When the battery (10655) has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module (PCM) (12A650) relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.

Connect the battery ground cable.

6. Check the steering column tube (3514) for proper operation.
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95 F150 302 4R70W EB EX-CAB
94 F53 460 E4OD COACHMEN SANTARA RV
83 F150 Flare Side 351W AOD
77 F250 351M-2V NP 435/4 Speed 4X4
subford@gmail.com
Bill K, Kansas Chapter
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Old 05-26-2011, 07:51 AM
 
 
 
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