Trailer Wiring

[Gregory OConnor]

Curt, here is a diagram which sounds to be the same as you describe. CurtTechnologies

I was looking for a diagram of what the fourway flasher switch on the bus powers and why there is a directional flasher unit and a fourway flasher unit . ???? cant understand the issue I had with fourway flasher blinking the brake controller causing trailer brakes to pulse on and off and cant remember the change I made to repair it.

one other point to reviewis left and right landing lights powering up with turn signals. I wonder if they were the WL labled relays?

Greg94ptCa

--- In WanderlodgeForum@yahoogroups.com, "Curt Sprenger" wrote:
>
> Before I begin...It's a good idea to sketch out on paper a new panel as
> described later. Also the bus original receptacle, a new wire loom, and a
> new brake controller.
>
> I've pretty much finished the bus Trailer Wiring project. Just need to tidy
> up a bit. All is working from what I can tell. I need to hook the trailer to
> the bus to validate the new trailer brake controller. The controller's
> display shows it's not hooked up to the bus which is true.
>
> What I did...I made up an 80' loom (6 wires, allowing wires for future). I
> thought I had too much wire...ended up using all but 2'. Took a day to
> install the wire loom...that counts my buddies stopping to talk. I used #14
> wire to make the loom. The the loom is inside 5/8" split loom... #16 or #18
> wire would work, and will make it easier to install the smaller diameter
> loom. The loom wires are used to trigger relays (turn them on) and then wire
> the relay output # 87using larger size wire to the trailer 7 pin receptacle.
>
>
> I also made up a panel consisting of....6 relays, an 8 gang fuse block, one
> 30 amp circuit breaker (CB), and a ground lug. I labeled the relays L, LT,
> RT, BK, 12V, BU. The relay ground pins # 86 are wired to the ground lug on
> the new panel.
>
> The CB provides power to the 8 gang fuse block. The other side of the 8 gang
> fuse block, one each, is wired to a # 30 relay pin.
>
> The original trailer receptacle wires ...I used three of the wires. Testing
> them showed they are OK. The wires are the Lights (L), Left Turn (LT), Right
> Turn (RT). Two other wires did not show any power. One could have been a
> ground wire. The three wires were wired to trigger the L, LT, RT (new) relay
> # 85 pins.
>
> Two new loom wires were used to send signals back to the # 85 relay
> terminals on the new panel. The signals are the brake controller brake wire
> from the new brake controller, and a back-up light wire. The back-up wire is
> connected to the Back-Up pole on the gen compartment 12V panel.
>
> The brake controller exciter signal is wired to the Stop Light pole on the
> gen compartment 12V panel. Power for the brake controller is taken from one
> of the CBs out front of the driver. And the ground is connected out front as
> well.
>
> The 12V relay on the new panel...power is supplied from the battery
> collection lug (isolator), to the input side of the 30 amp CB. The CB output
> side supplies the feed to the # 85 pin on the 12V relay. Complete all other
> wiring before doing this step.
>
> The relay # 87 wire to the trailer receptacle...All are # 12 wires except
> for the 12V and the Brake and they are #10. The #10 might be overkill but
> that's me.
>
> The only real issue is routing the new wire loom. The rest is easier than it
> sounds. I'm getting ready for the Buellton, CA rally and for now do not have
> the time to make up a schematic.
>
> Our coach has dual (each side) red led tail/brake/turn/flasher LED lights.
>
> With the brake applied along with a L or R turn, the turn side blinks, the
> other side is a steady brake light.
>
> I'll try to get to hooking up the trailer tomorrow. I'll keep you posted.
>