Oil pressure guage / tach not working

[dhern]

I replaced the oil pressure sending unit thinking it was out but my oil pressure gauge is still not reading the oil pressure. Is there a common fix? Gauge stays at the bottom...

Also my tach is not working. HOw do I attack this one?

[csuggs]

Start by checking your ground wire(s). Look under the dash and there will be a common ground for all the gauges. Did both stop working at the same time?

[dhern]

I believe they both did stop working at the same time.
I paid a tech to come and replace my steering cable at the end of last seasion and Im not sure if something was knocked loose.
I did fine two brown wires in next to the bildge pump that do not reach each other but are both exposed. My buldge works manually but not automatically... Is there a wiring diagram some where for a 2003 Supra SSV somewhere?
I appreciate your helping this upgraded "Wally Weakender" LOL