21-07-2013, 07:01 AM
You can use solder, or crimp on connections, or connector block, or like most cretins do twist the wires together and put Sellotape round them (which I wouldn't advise)
I found the best feed for the gauge is if you take the panel off where all the fuses are there is usually a row of green relays. Every 306 I've had has had a spare socket without a relay. If you use a multimeter to test the outputs one of them will be an earth/ground and one of them if my memory serves me correctly will be a switched live with the key. If you want the boost gauge to be lit up all the time when the car is running (handy if you've got a smoked gauge) then you could use that as your feed.
Alternatively you can tap into the headlamp adjuster wiring which will give you both a switched live and also a live when the headlights are on.
Or even more alternatively, if you have an aftermarket head unit you will probably find that there is a feed for the illumination for the standard radio which won't be used any more which you could extend over and have that as your 12v feed which comes on with your headlights.
In addition to this you could also have a switch on a live cable to turn the gauge on as and when you like.
I found the best feed for the gauge is if you take the panel off where all the fuses are there is usually a row of green relays. Every 306 I've had has had a spare socket without a relay. If you use a multimeter to test the outputs one of them will be an earth/ground and one of them if my memory serves me correctly will be a switched live with the key. If you want the boost gauge to be lit up all the time when the car is running (handy if you've got a smoked gauge) then you could use that as your feed.
Alternatively you can tap into the headlamp adjuster wiring which will give you both a switched live and also a live when the headlights are on.
Or even more alternatively, if you have an aftermarket head unit you will probably find that there is a feed for the illumination for the standard radio which won't be used any more which you could extend over and have that as your 12v feed which comes on with your headlights.
In addition to this you could also have a switch on a live cable to turn the gauge on as and when you like.