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Old 09-24-2011, 12:07 AM   #1
robbyray's Avatar
Alpine Owners Club
Join Date: Aug 2010
Location: Richland, WA
Posts: 54
SMI Duo with Wireless Signal

Had SMI Duo installed last month and thus far am very satisfied (Alpine 36 FDDS Diesel Pusher -- Subaru Outback Manual 2011 toad w/Blue Ox towbar, traditional 6-pin hitch electrical connector). However, I'd feel more comfortable with supplementing the supplied SMI braking LED indicator that I currently have to see on the front end of my Subaru via my Alpine rear view camera. In bright sunlight, the LED on the front end of the Subaru is not very visible and it is pretty small being viewed via the rear mounted coach camera. Two question categories:
1) Anyone have any problem with the SMI wireless radio braking signal from the toad? If so, were you / SMI able to resolve it and how?
2) Anyone know where to find a spare wire in the front passenger or driver side of my Alpine (2008 year) that already goes to the Alpine rear hitch electrical connector? If so, perhaps I could use the spare wire for hard-wiring the SMI Duo brake signaling on/off up by the coach driver area which would be much more useful (viewable) to ensure the toad brakes are used properly.

I have a traditional coiled wire, 6-pin hitch connector and I believe the six pin connectors are typically hooked up as follows: 3 pins allowing the basic hookup of the three lighting functions (running, turn, and brake), 1 pin (white wire) for the ground and two extra pins to provide two additional functions, typically for electric brakes (blue wire) and 12 volt "hot" lead (center - red or black wire). Currently the center wire on the coach connector (12 volt hot lead) is not being used at all (my coiled wire connector to the toad doesn't use the center pin on the coach). Also, I don't think the electric brake pin on the coach (blue wire) is being used and it too appears to be active. Either of these unused wires if available near the coach driver's or passenger's dash area could be used for the SMI brake signaling directly viewable by the coach driver.

I've just ordered the SMI wireless radio to try it out but would prefer a hard wire back-up in case anything affects the wireless signaling reliability. Thanks for any input. ray

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Old 09-30-2011, 05:27 PM   #2
Junior Member
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Jul 2009
Location: Alberta, Canada
Posts: 18

I have the SMI Dual mounted in my GMC Canyon toad. I didn't want to mount the LED Indicator to the toad due to the same concerns you have.

I installed a 6 pin trailer connector on the back of my MH (originally had a 4 pin) and ran a wire for the LED indicator up to the dash. I mounted the indicator to the top of the steering column of the MH just beneath the dash. When the brakes of the TOAD are in use, the LED Indicator on the MH dash lights up so I know they're functioning properly. I used the brake pin on the trailer connector as I don't plan on towing a normal trailer with my MH.

I also used the 12v pin to run a 'Toad Charger' line for keeping my TOAD's battery charged. This line is switched at the MH dash and is protected by 12v circuit breakers at both ends (MH and TOAD).


1999 Fleetwood Southwind 34N on F53 Chassis, V-10
2009 GMC Canyon Crew Cab Toad
Demco Aluminator Towbar SMI Braking System
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Old 10-01-2011, 11:05 AM   #3
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Alpine Owners Club
Join Date: Aug 2010
Location: Richland, WA
Posts: 54
Many thanks Lane for the feedback. Will try to duplicate your setup. Haven't had time to install the SMI wireless solution yet. Safe travels, ray
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Old 10-01-2011, 01:32 PM   #4
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Newmar Owners Club
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Appalachian Campers
Ford Super Duty Owner
Coastal Campers
Join Date: Dec 2007
Posts: 2,033
We've had the wireless solution installed since 2008. It works fine, the light does flash on and off occasionally when the brakes are not applied but I've trained myself to ignore the flashes.

I'm looking for constant on when I'm not braking as an indication that the brakes are staying on when they shouldn't. I've never had it stay on for more then a second or two when I'm not braking and I've never has the brakes cook, so the light has served it's purpose.
Stewart, Brenda and kids
2008 Newmar Canyon Star 3410
2006 Roadtrek Versatile 210
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