Hey guys.I have a set of VDO guages to go on my A-pillar and need some help hooking up.Their the electric type,oil psi and volts.Can I tap into the OE sending unit on the oil psi?And can I do the same on the volts?just tap into a 12 volt scource?Another question.Where can I get the bulbs to match the indiglo dash guages I have in my 91?Thanks for any help guys!