Here is a wiring color and location diagram www.scionlife.com/tech/?article=38
3Q but pick up 4Q
It is on the lower right side of the engine compartment. It is easier access (and remove) if you pull off the right front tire first.
Max's yellow Interceptor was a 1974 Ford Falcon XB sedan (previously, a Melbourne police car) with a 351ci Cleveland V8 engine and many other modifications.
You can order a wiring diagram from the dealer, I believe it is about $50- $60, there is no beter wiring diagram than a factory diagram
Scion xB was created in 2003.
The 2010 Scion xB has 16 valves.
The 2004 Scion xB has 16 valves.
The 2014 Scion xB has 16 valves.
The 2006 Scion xB has 16 valves.
The 2011 Scion xB has 16 valves.
The 2012 Scion xB has 16 valves.
The 2008 Scion xB has 16 valves.
The 2005 Scion xB has 16 valves.
The 2013 Scion xB has 16 valves.
The 2009 Scion xB has 16 valves.