I have an 89 RRC and the oil pressure light works sporadically when I turn the ignition on. I have cleaned the copper contact on the instrument panel, put dielectric grease on the bulb holder contacts and resodered the wire connections on the back of the panel. It seems like it is getting a bad connection because I can get it to work by moving the bulb holder. Any suggestions? I have purchased an oil pressure gauge to install, but I would like the idiot light to work as well. Thanks