12v switched power supply

240 · Mar 11th, 2013, 11:48

in the fusebox which is the one to connect to? im going to attempt fitting an ambient temp gauge. or is there an easier way?also could i just wire the bulb direct from the clock?

cheers

Angie · Mar 12th, 2013, 13:36

Have sent PM as requested, and link to this thread http://www.volvoforums.org.uk/showthread.php?t=160488 which I started when I fitted a similar gauge. It's a very simple job - it had to be, I managed it unaided! I didn't go right back to the fuses, just connected from the radio wiring.

240 · Mar 12th, 2013, 13:49

thanks, i see what you mean about haynes diagrams ;( im not very good at electrics so dont know which wires which on the radio theres quite a few of them in the plug!!
i think looking at the therad your gauge is the same as im fitting? cant see a red light though? where is that and whats it for?

thanks

i think what i need is an idiots guide!!

Angie · Mar 12th, 2013, 16:26

The central disc has a little slot in it. I think the red light is on all of the time, and as the needle gets to 4 deg. it shines through the slot. Apparently below that temperature there is danger of ice on the road. When you turn the key the needle swings clockwise and the light shows briefly - unless temperature is low when the needle stops and the light shows continuously.

I don't know how to identify the correct radio wire, I just remember that it seemd to be obviously the live feed. You need expert advice to be certain, maybe I was just lucky!

loki_the_glt · Mar 14th, 2013, 22:56

Take a feed from the output side of the Heated Rear Window or direction indicators fuse - looking at the fuse box from the passenger side that's the right-hand side of the fuse.
You need to take the feed from an ignition-live circuit so the gauge only reads with the engine running, or at least the idiot lights "armed".
I haven't got the manual to hand so can't tell you which fuse, but it should be a 16-amp one. The wipers, horn, blower fan and radio ones are all accessory-live, while many of the others are permanently live and the gauge's drain will eventually flatten the battery if the car is left standing.

Mar 11th, 2013, 11:48	#1
240 BOB MY BIG OLD BUS Last Online: Jan 15th, 2014 01:06 Join Date: Apr 2010 Location: NORTH EAST	12v switched power supply in the fusebox which is the one to connect to? im going to attempt fitting an ambient temp gauge. or is there an easier way?also could i just wire the bulb direct from the clock? cheers __________________ ~ Never, ever, argue with an idiot. They'll drag you down to their level and beat you with experience ~

Mar 14th, 2013, 22:56	#5
loki_the_glt Torquemeister Last Online: Yesterday 18:47 Join Date: Dec 2004 Location: Asgard, Cheshire	Take a feed from the output side of the Heated Rear Window or direction indicators fuse - looking at the fuse box from the passenger side that's the right-hand side of the fuse. You need to take the feed from an ignition-live circuit so the gauge only reads with the engine running, or at least the idiot lights "armed". I haven't got the manual to hand so can't tell you which fuse, but it should be a 16-amp one. The wipers, horn, blower fan and radio ones are all accessory-live, while many of the others are permanently live and the gauge's drain will eventually flatten the battery if the car is left standing. __________________ loki_the_glt - Skipper of the Exxon Valdez, driver of Sweden's finest sporting saloon - and pining for another Slant-4.

Mar 12th, 2013, 13:36	#2
Angie Premier Member Last Online: Jun 12th, 2024 22:53 Join Date: Apr 2011 Location: Lostwithiel	Have sent PM as requested, and link to this thread http://www.volvoforums.org.uk/showthread.php?t=160488 which I started when I fitted a similar gauge. It's a very simple job - it had to be, I managed it unaided! I didn't go right back to the fuses, just connected from the radio wiring.

Mar 12th, 2013, 16:26	#4
Angie Premier Member Last Online: Jun 12th, 2024 22:53 Join Date: Apr 2011 Location: Lostwithiel	The central disc has a little slot in it. I think the red light is on all of the time, and as the needle gets to 4 deg. it shines through the slot. Apparently below that temperature there is danger of ice on the road. When you turn the key the needle swings clockwise and the light shows briefly - unless temperature is low when the needle stops and the light shows continuously. I don't know how to identify the correct radio wire, I just remember that it seemd to be obviously the live feed. You need expert advice to be certain, maybe I was just lucky!

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