fair enuff m8 lol.
1) I ran cables from the back of the headlight switch and dimmer switch up to where the gauges were going to be placed
2) I connected each coloured wire on both gauges together, (so yellow wire to yellow wire from boost and from oil temp gauges etc)
3) I connected the needle illumination wire and the dial illumination wire together (i think these are purple and orange). They both need power from the dimmer switch so may aswell all connect together.
3) I connected the appropriate wires from the headlight switch and the dimmer switch to the wires on the gauge and hey presto...the illumination side of things was done.
4) I then ran the vac hose for the boost gauge...NOT fun! i took the bottom bit of the dash off to do this so i could see more...but there still isn't much room to see up the top!
5) Plugged the vac hose into the back of the boost gauge
6) Used the t-piece and plumbed the vac hose into the dv vac pipe, and thats the boost gauge done.
7) Then i did the oil sender. I ended up getting a mate at my local garage to
help with this, as the engine side of things scares me more than electrics lol. He took off some covers and brackets and fitted the sender in the top of the oil filter housing.
8) The white wire from the sender AND the black wire were needed to make mine work (however that may be because we used PTFE tape on the thread so no oil leaked, but this may have stopped it from earthing itself).
9) The white wire was run to the back of the gauge and fitted appropriately, and while i was at the back of the gauges again, i earthed the - bolt to the same earth the dials used for the illumination.
10) Then i earthed the sender somewhere in the engine bay. And that's oil temp done too.
That was my process, i wish i had taken pics but i will dig out the thread i had on fitting these and link you to it in a sec...it was all i needed and mine are still working fine