98 Need electrical help

[garover1]

Trying to find a common link between the radio, clock, interior dome lights. All of these are now not working after I removed an aftermarket phone hook up. All dash fuses are good. I've tried to find anyplace under the dash where the phone might have been spliced into a common power source but I got nothing.

[garover1]

Today when I started the enhine the key bezel light and the radio were pulsing and an odd sound was coming from under the dash on the passenger side. The cigar lighter does work so it's just the dome lights and radio not working and the key bezel stays lit all the time.

[Ron T.]

I'm new to this, just picked up my 97 Discovery last April. Question, when you mentioned the radio did you mean the radio or the radio lighting? From what i see in the Hayes manual, all of the cold (ground) side of the lights you've mentioned is controlled by multifunction unit, apparently a purple blue wire going into B/24/4. But, if I'm reading the wiring diagram correctly, there appears to be a splice point or terminal where not less than five purple/blue wires join. It may be that the phone lighting was tied into this point. It is interesting that the British controlled the lighting on the cold side of the lamps, rather than on the hot side.

[garover1]

The radio lights are the ones that are pulsing, the radio does not come on but I was assuming it was tied to the constant of the lighting. When I was further trying to look at everything today I noticed that as long as the radio was off and the dome lights were off the bezel light would work fine. As soon as either of them was turned on the bezel light would light up. If I turned on the dome lamp and turned it back off the radio would flash 10 or 11 times along with this lighting the disc changer would also pulse. I'm thinking it has to be a ground, but I have looked everywhere for a loose or broken connection but haven't found it yet. Any Ideas on where the splice you are referring to is? Or the control unit?

[Ron T.]

In my opinion, it seems that there may be a couple of problems. I'm at work at the moment and don't have my Hayes manual here, but I don't think that there should be any connection between the dome light and the other things, except possibly the multifunction unit. I haven't owned my Disc long enough to get to know where everything is, but I think the multifunction unit may be under the right hand dash panel. It should have quite a few wires going to it. The lights have power going to them all the time through there own fuses, the cold (ground) side of the lights are tied together through the splice and the ground is controlled by the multifunction unit. Unfortunately I do not know where the ground side splice may be located.

If anyone on the list has a schematic of the multifunction unit it would be a very big help.

Later tonight (I'm on Mountain Time) I'll see if I can figure anything further out from the Hayes manual wiring diagram.

[garover1]

that would be a great help