Reply
 
Thread Tools Display Modes
Old 06-17-2013, 07:44 PM   #1
Junior Member
 
Join Date: Jun 2013
Location: 117W 33N
Posts: 2
Rear MH Lights - Wiring the toad

Howdy Folks. I'm having a tow vehicle wired (for braking and turns) and the installer asked me if my MH had a one or two light system for the turn signal/brake signal. Apparently it involves some diodes, one way or the other, that need to be installed on the Toad. We have a 2012 390BH-360, and would greatly appreciate it if anyone knows the answer. Thanks.
__________________

__________________
117W33N is offline   Reply With Quote
Old 06-17-2013, 08:02 PM   #2
Senior Member
 
NV245's Avatar
 
Join Date: Jun 2013
Location: Carmel, In
Posts: 175
If you have a trailer connector on the back of the coach, the problem is already solved, just need to know if the connector is 4 or 7(most common) way. What the installer is wanting to know is if your coach has amber turn signals and red brake lamps or if you have red brake lights that become turn signals. In newer vehicles with factory trailer wiring the trailer connector circuits already behave as if the brake/turn signals are the same, no add on diodes needed.
__________________

__________________
NV245 is offline   Reply With Quote
Old 06-17-2013, 08:03 PM   #3
Senior Member
 
Himcules's Avatar
 
Join Date: Feb 2011
Posts: 319
i'm not sure i understand this?

your installer should be taking the input from the harness connect at the hitch. the harness will give the brake, braking lights, parking lights, and turn light signals through that regardless of how many lights are on the motorhome...
__________________
============================
himcules (10x stronger than hercules)
2013 Forest River Berkshire 390BH-60
ex 2007 Jayco Greyhawk 31SS
Himcules is offline   Reply With Quote
Old 06-17-2013, 08:41 PM   #4
Junior Member
 
Join Date: Jun 2013
Location: 117W 33N
Posts: 2
NV245 is correct in that the installer is asking if the Berk has the two different lamps or just one. In my case, the Toad is a 1971 FJ40 Landcruiser, so a diode setup will be required if two bulbs are in use on the Berk. I do know that the Berk has a 7 pin connector. Just need to find out if it runs one or two bulbs. The coach is in storage right now, otherwise I would just go out and kick the tires. Does anyone know the bulb setup or has had to deal with this issue themselves? Thx
__________________
117W33N is offline   Reply With Quote
Old 06-17-2013, 09:20 PM   #5
Senior Member
 
NV245's Avatar
 
Join Date: Jun 2013
Location: Carmel, In
Posts: 175
The 7 way connector on the Berkshire, being factory Freightliner, will have as output for left turn signal, right turn signal, park lamp, and ground for the towed vehicle or trailer. The other pins should be for 12 volts, electric brakes, and reverse lamps. The turn signal outputs, when constantly on, are used as brake lamps. The connector on the coach should be wired in a universal manner so any trailed vehicle can just be plugged in. Just remember, the way the electrical system is configured, that if the coach lighting is working correctly, it doesn't mean that there couldn't be a fuse open for the towed vehicle and the toad's lights won't work. Checking the toad's lamp operation occasionally is recommended. Tell your installer that you already have the coach wired for trailer with a 7 way connector.
__________________
NV245 is offline   Reply With Quote
Old 06-17-2013, 11:28 PM   #6
Senior Member
 
Join Date: Nov 2012
Location: Home is where I park it
Posts: 1,503
As far as I know, the diodes keep the coach voltage from interfering with the toad voltage (and vice-versa) since both the toad itself as well as the coach are powering the same bulbs.

I think to run a 3 light on the toad to 2 on the coach (or vice-versa) requires more than simple diodes; but an electronic "box" that converts between one type of system and the other.

I'm not an expert on this, but I have the diodes on my toad and both the coach and toad share the same bulb filament for both turns and brakes (the old fashioned way before amber lenses came around).

Boowho??
__________________
boowho is offline   Reply With Quote
Old 06-17-2013, 11:59 PM   #7
Senior Member
 
NV245's Avatar
 
Join Date: Jun 2013
Location: Carmel, In
Posts: 175
The diodes installed on the toad prevent front turn signals and parking lamps from operating on the toad when motorhome lamps operate. Usually a relay that only allows toad brake switch to work with toad ignition on is installed with a toad brake controller to prevent toad brake lamps from interfering with coach brake lamps when toad brake controller functions.
__________________

__________________
NV245 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 07:58 AM.