01 tundra connecter

Any idea of what the single pin connector @ left front fender next to a two pin connecter is for? Or where it's suppose to connect to?

 

You don't list what year and cab style your truck is.

It's either for your day time running lights or the buzzer for keyless entry chirp. Both harnesses are in that general area.

 

01 4.7 sr5 access cab

 

Three different threads, all related to the first one. Why not just keep it in the same one?

 

Sorry, new to forums

 

Is that not the DRL harness?

 

For a 2001, Toyota added that optional 1 pin connector(O 3) for later use if one decided to add a trailer harness kit. As part of the kit, there's a short cable with a fuseable link that plugs into that O 3 connector. The orther end attaches to your Batt + to feed the trailer converter. The conductor heads to rear end/driver side and ends as part of an 11 pin gray connector(T 9) for a trailer converter.

The 2 pin gray connector next to the 1 pin, is for daytime running light resistor D 2.