I'm building up my drivetrain for installation in my new roller and was starting to sort out all the existing engine compartment hook ups. Thanks to Blas' really outstanding wiring diagram I think I have the wiring loom questions sorted out but I'm unsure of what the long plastic tube is for. It's wrapped up and secured to the driver side inner fender well near by the coil. It's about 3/16" OD. About 3 or 4 foot long plastic tubing with a yellow casing on the lower portion and is coming into the engine compartment from the dash area. Is this perhaps for the
oil pressure gauge? Something else?