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Author Topic: Denali Rear T3 Switchback Pozi-tap Connection to 2020 XR  (Read 381 times)

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Offline CJT1969

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  • Bike: S1000XR TE
  • Town: Guildford
  • Country: gb
Looking for some advice please.

Due to rear indicator (lack of) visibility when braking I decided, for safety, to buy a pair of Denali Rear T3 Switchback indicators.
Has anyone pozi-tapped a pair of these or anything similar into the rear lighting wiring on their 2020/21 XR?

I'm familiar with connecting them into a CANSmart, but ideally want to connect directly into the XR's wiring, as they are supposed to.

Thanks, in advance.

#1

Offline andrewb2006

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Re: Denali Rear T3 Switchback Pozi-tap Connection to 2020 XR
Reply #1 on: February 04, 2021, 06:23:31 PM
I did direct it with pozi taps but the side lights kept flickering the brake light feed has a real dim feed all the time so you can’t stop the flickering.

I went with Denali CanSmart it’s now perfect but expensive

#2

Offline CJT1969

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Re: Denali Rear T3 Switchback Pozi-tap Connection to 2020 XR
Reply #2 on: February 05, 2021, 12:01:12 PM
Thanks andrewb2006. Feedback from other sources too seem to be consistent in so far as direct connection just doesn't work as it should, & the only way to make it work is, as you've done, connect it directly into the CANSmart.
Not very good from Denali......

#3

Offline jskene

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Re: Denali Rear T3 Switchback Pozi-tap Connection to 2020 XR
Reply #3 on: February 05, 2021, 01:37:06 PM
On the XR, BMW uses the same lamp for the brake and running lights. They modulate the signal being sent to this lamp with a 10% duty cycle pulse when the brake is off, so the lamp lights up at a lower, running light intensity. When the brake goes on this duty cycle is increased to 100% and the light increases to maximum brightness.

The Denali T3 has no intelligence in it, and so cannot distinguish between these two modes, which is why it doesn't work. Many bikes use this method, so the product is of limited usefulness unless your bike uses the traditional two filament tail/brake bulb with separate running light and brake light wires.

In order to make supplementary brake lights work on our bikes, you need a lights with a smart controller such as P3 Lights from Skenelights. Its computer differentiates between the two signals sent on the brake wire and lights up its supplementary LEDs accordingly. A Canbus device like the Cansmart can also be used as mentioned above, but this adds significant cost on top of the T3 units.

(Full disclosure - I designed P3 Lights and am affiliated with Skenelights.)

#4

Offline CJT1969

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Re: Denali Rear T3 Switchback Pozi-tap Connection to 2020 XR
Reply #4 on: February 05, 2021, 06:40:09 PM
Thanks jskene.
Your P3 Lights with Decelerometer & Turn Signals look just like what I'm after, as I also wanted to add brake lights to indicate engine braking deceleration.
The Adventure Bike Shop (in the UK) stocks your products but they don't list the one above - are there other UK distributors that you can advise me of? 

#5

Offline jskene

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Re: Denali Rear T3 Switchback Pozi-tap Connection to 2020 XR
Reply #5 on: February 05, 2021, 07:23:25 PM
Please check with them directly at skenelights-sales@skenedesign.com. They can give you the most up to date information on current distribution channels in the UK.