im fitting a electronic oil pressure gauge into my sierra 2wd cossie unfortunatly no instructions can anyone advise me how to wire it up ive fitted the adaptor to the block but now iam at a loss

also i have a volt meter and also not sure how to go about wiring it up?

any guides would be most appreciated

 

Voltmetre is simple negative and positive, depending on whether you want it to read all the time or just when ignition on wire accordingly, may also have a backlight to wire in, same again neg to earth, live(for bulb) to sidelight circuit light, from ciggy lighter etc.
The oil pressure gauge again will have a backlight so wire this as the voltmetre is, and then on the adaptor you need a pressure sender, to give the variable earth to the gauge, the other gauge wire live will be connected to an ignition controlled source.
tabetha

 

most will only have 3 wires, feed (red), earth (black), illumination (orange or green)

but i worn you that electroinc pressure gauges are shite, much better with a mechanical one

 

yep second that, they look the nuts but hard to see exactly whats going on......

 

yup, and more often than not, inacuratre too

you also need to make sure the sender is the correct one for the gauge, because you cant mix n match senders and gauges

 

Why this crap is always spouted about innacurate gauges purely because they are electric is beyond me.
There is no reason why a lecky one should be any less or more accurate than a regular mechanical one, so long as it has a matching pressure sender, and your regulator part of the alternator works perfectly.
They will normally use either a thermal pressure transmitter and indicator(gauge), where a analogue signal will be produced and represented on a gauge showing pressure, the signal produced is directly proportional to the pressure applied inside a pressure sender by the diaphragm contacts and heater coil.
A more expensive type will use a piezo crystal but where again pressure applied will induce a differing voltage across a fixed value resistor which again is directly proportional to the oil pressure.
I don't think most people are after accuracy down to 1/1000 of a psi, I have el cheapo TIM gauges, that is within 2psi of actual at 13.8 volts which I think is close enough, epecially when you consider the engine has been at that pressure all the time, the only difference is now with a gauge you know it, it worked before with the same pressure.
tabetha

 

thanks for the replys, i was told the mechanical are a risk due to having a oil line running from the engine to the gauge hence why i opted for electric

 

There is of course a risk with a line carrying oil, in case it breaks, but just put 5/6 coils in it just where it goes to engine, this will minimise any vibration and be ok then, I use a bit of tube and wrap it around it gently to shape.
tabetha