Electrical Help.

[Crisis]

I was hoping someone out there could help clear up some confusion I'm experiencing with my 73 TR6?
It concerns the starter circuit. Turning the key would not crank the starter. Upon inspection I found two frayed wires going to the starter. 1-heavy w/r, 1-lighter w/y. I pulled back the tape and re-taped the individual wires. Starter will now crank. My question is; what is that clip/connector attached to the red battery cable? Does it provide a connection to the battery cable? I've got 2 heavy brown, and 1 smaller brown wire going into the clip, then coming out the other end and going back into the firewall. One of the wires coming out of the clip is suspect and I was hoping someone could shed some light on this part. Thanks.

 

[TR3driver]

My question is; what is that clip/connector attached to the red battery cable? Does it provide a connection to the battery cable?

Yes, exactly. That's where the entire car (except the starter) ties into the battery.

 

[Crisis]

Thanks Randall. I guess this may explain a number of electrical problems I've been having?
Do you know of a link where I could find out what gauge all the TR6 wiring would/should be?
Reid

 

[DNK]

As gig as you want. Check out British wiring. I also have that info somewhere I'll try to dig it up.

 

[Guest]

Thanks Randall. I guess this may explain a number of electrical problems I've been having?
Do you know of a link where I could find out what gauge all the TR6 wiring would/should be?
Reid

Reid, the absolute handiest thing you can have for your 73 TR6 electricals is to buy Dan Masters' book on TR6 electrical problems and solutions. Included in the book is a complete, accurate wiring diagram for your specific year (and all others). The book is available from Moss Motors and worth every penny.

 

[TR3driver]

I guess this may explain a number of electrical problems I've been having?

Certainly possible, I've seen several cars with problems in this area. Pop the cover off and look for any signs of overheating.

Do you know of a link where I could find out what gauge all the TR6 wiring would/should be?

Sorry, I don't. But this chart should be helpful in figuring out what it should be (as opposed to what it was) :
https://www.powerstream.com/Wire_Size.htm
Use the "amps for chassis wiring" column.

Of, if you are planning a major rewire project, you might consider this :
https://www.advanceautowire.com/harness.htm

 

[TR3driver]

Reid, the absolute handiest thing you can have for your 73 TR6 electricals is to buy Dan Masters' book on TR6 electrical problems and solutions.

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JIC anyone doesn't know, the same Dan Masters founded Advance Auto Wire; just to sell upgraded LBC electrical systems. Dan is a retired power plant EE, so he knows quality wiring; and owns a modified TR6 so he uses what he sells. His son does most of the running of AAW, but Dan still does the designs.
https://www.advanceautowire.com

 

[mrv8q]

Reid, the absolute handiest thing you can have for your 73 TR6 electricals is to buy Dan Masters' book on TR6 electrical problems and solutions. Included in the book is a complete, accurate wiring diagram for your specific year (and all others). The book is available from Moss Motors and worth every penny.

Or available from Dan, directly for $30Us, and $5 shipping, ISTR.....

 

[tomshobby]

Or download and print for free.

https://www.advanceautowire.com/

 

[DNK]

Tom- The hand book is not available on his site.

 

[Brosky]

I got mine on sale a few years ago from TRF.

 

[TR3driver]

Last time I talked to Dan, he said he was trying to get away from work and spend more time with his grandson (and Triumph). He used to print and bind those books himself; but I believe he sold out the last run and has no plans to do it again. TRF produces them now, P/N RFP605, currently on sale for $39.95.