[TR] Horn relay questions

[DAVID GILL]

Thanks Bob. That’s one of the wiring diagrams I have checked. After some more investigation, I believe that the pin (which I have determined is black with a blue tracer) is the horn ground. I assumed that the horns would ground to a tab on the chassis but they seem to ground to the horn relay through the wiring harness.  Not what the books or wiring diagrams say, but that’s the case with my TR6 and I believe it is original. If I go to a 4 pin relay, I’ll have to ground the horns separately it seems. Thanks again for the response. 
David Gill
1976 TR6

Sent from my iPhone

> On Sep 3, 2021, at 7:19 AM, Bob Danielson <75tr6 at tr6.danielsonfamily.org> wrote:
> 
> 
> AAW Wiring diagrams are per model year and very accurate and it shows the horn relay as being 4 pin fed by P, PB and PY
>  
>  
> <6B8E42070E7949809DC5BA176C17B02E.png>
>  
> Bob Danielson
> TR6 Interior Panels, Boot Covers and Fender Blankets
> http://tr6.danielsonfamily.org/PanelBootSales1.htm
>  
> From: davgil at aol.com
> Sent: Friday, September 3, 2021 6:47 AM
> To: triumphs at autox.team.net
> Subject: [TR] Horn relay questions
>  
> I have a 5 pin horn relay on my 1976 TR6 that appears to be original.  I am only getting 9 volts on the purple/yellow output to the horns so I am assuming a bad relay, but I cannot find the purpose of the 5th pin.  It is not the horn ground from the push button, input from the fuse box or output to the horns.  My wiring diagrams all show only 4 pins for the relay.  I cannot read the pin identifiers so there is no help there.  The wire is black with a tracer color that is faded so I cannot determine what it is.  Any ideas would be appreciated.
> David Gill
> 1976 TR6
>  
> <6B8E42070E7949809DC5BA176C17B02E.png>
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