Yes, resistance is the enemy. Resistance causes heat & heat causes more resistance (it's a vicious cycle that never ends well). The longer you wait the worse it will get. You should definitely remedy this issue before taking a long trip. Tim

PS: When things are new and shiny (more conductive) you can get by with loose connections and bad crimps. As things age and become tarnished, corroded, and/or heat damaged, you lose the advantage of "new & shiny". It's this point in a vehicles life that electrical problems begin (even though the root cause may have been there from the beginning). Burntboot (member here) has been chasing & repairing these type problems in his van. Some of the things Toyota did regarding wires & connections set us up for these type issues. Here's a link to Burntboot's thread: http://www.toyotavantech.com/forum/s...ghts-continued