Hello all, I just got some speakers and a AM/FM CD player that I want to install in my 87 240. Now is there a wiring diagram available somewhere for this? thanks and God bless.
mike

 

87 240's, the radios were dealer installed options. our 240 GL sedan came with no speakers OR radio (we declined the option when we bought the car, much to the dealer's annoyance). there were two factory radio configurations, one with just the radio installed down at the bottom of the console, and other other with a equalizer/amplifier down there, and the radio in the very top of the center console.

you can get DIN adapters for either slot, I like the lower position as its less obvious to thieves, and less glare in your eyes at night from overly bright stereos. To be honest, I never got an adapter, instead I screwed a piece of 'plumbers strap' to the mount bolt on the back of the stereo, bent that piece into an "L" shape, and put a 4x6" piece of wood and a block of foam between the 'L' and the bottom of the stereo, so this slid nicely into the lower cubbie and was held in place by friction. I was going to fab some kind of bezel but never bothered in 28 years of ownership, hah!


The 1987-1988 240 greenbook shows a 3x3 (9 pin) connector behind the stereo, where the red wire for the antenna control has its own single spade lug connection wired to pin 3. Switched power on yellow-black wire from fuse 1 (connector pin 2) and always on via green wire from fuse 8 (pin 1). The radio connector is grounded (pin 9) to a screw into the tranny hump below the left edge of the bottom of the center console, and forward of the shifter. the left front door speaker + is yellow-white pin 4, - is white, pin 7. right front door speaker + is grey-yellow pin 5, - is grey pin 8.

If you can't find that 3x3 block connector, I'd probably get my power direct off the fuse panel. Just to the right of each fuse is three rows of spade lugs. the rightmost row is wired to the left side of the fuse and is the power 'source'. the middle and leftmost spade are wired to the right of the fuse and are the output of that fuse. fuses 1-3 are powered by "X" (on in accessory or run), while fuses 6-10 are always hot (direct off positive terminal).

the 1987 240 sedan front doors took a rather small speaker size, I think 4.5" or something, and they have to be fairly slim speakers unless you fabricate a spacer block to get an extra 1/2" of depth for a bigger magnet (I used masonite, cut the outside to match the factory door grill, and the inside to mount the speaker, then put this between the door panel and grill)

I cut the rear deck for oversized 6.5" coaxial speakers, and installed JL Audio XR series 6.5" coaxials with seperate crossovers... that car could rock ... a 50Wx4 pioneer deck provided plenty of power to drive those, the 4.5" front speakers almost didn't matter. If you add some large powerful rear speakers, you should wire 'bass blocker' capacitors in series with the small fronts, this way they don't get overpowered and distort when you crank up the rear.

 

Thanks, for the reply, I did google the wiring diagram and of course it did not match what my car has, I had to use my Fluke multi meter and ohm out or do a voltage check to find out what was what. Any way, I finally got the "new" radio installed.