Mine comes through a grommet next to the battery up behind the glove box and I have removed the top vent (useless anyway) and mounted three gauges there!!
Does anyone know where I can get a gauge repaired, I've got a dual mechanical oil pressure / oil temp gauge.... the problem is it has a sensor in the sump (I had a Stainless Steel Adaptor made as well >:-( ) I grounded the bottom of my motor and broke the solder seal and the tubing has come off... I can solder it but it needs charging with methanol or the like, calibrating and then soldring.... not sure how to go about it myself .
thats a pain, i have a twin pillar for my boost and wideband and a triple din for my oil press/temp and water temp. there is a gromet just behind the clutch fluid resivoir i was eyeing up for the boost and wideband. but is my other three im not sure on, i might just drill some holes and buy some gromets.