After making around 30 F-16 skins I needed a change of scenery, and wanted to do a Fictional Dutch Air force A-10 skin, and therefor chose to make an F-16..livery for the A-10 :)
The 'Testgroup F-16' is not a squadron in the real sense of the word. All squadrons within the RNLAF are tasked to fly test missions with F-16 fighters. However the team at Volkel AB became bigger with more staff and a designated testing aircraft. This to perform tests that the USAF did not perform or in a different environment. In 1984 the first F-16A #J-646 was equipped with special wiring for this testing duty. It was called 'Orange Jumper' because of the orange color all the test wiring had. This to prevent mixing up the test wiring and the regular F-16 wiring.
http://www.f-16.net/units_article274.html