alternator questions [ the brown wire has voltage

[Southbound]

I hope someone can help...I have a 75 tr6 and have a question about the wires running to the altenator. There is a small wire it's brown coming from the altenator. I think is for the ignition warning light but when I disconnect it from the altenator I get 12 volts with my meter when I attach it to the disconnected wire.
Whats up with that? When I leave it connected the ignition lite stays lit even with the keys out and off.
I appriciate your help

 

[kodanja]

welcome to the forum Southbound

this subject has and is being discussed in many threads, look around and im sure youll find the answers

heres a pic of mine when it was working

 

[Southbound]

That doesn't look like a late model tr6...

 

[kodanja]

its not

 

[BobbyD]

If you don't have a wiring diagram, Dan Masters has color coded ones by model year posted here https://www.advanceautowire.com/tr2506.pdf

His Electrical Maintenance Handbook is a must for trouble shooting electrical problems.

 

[Southbound]

I'll work on it