Alright, In my 89 240 I'm having some big electrical issues that I can't seem to figure out.

When I put my foot on the brake the dash lights and parking lights go on.
When I take the key out of the ignition the clock turns off and the seatbelts stop working.
My stereo doesn't turn on.

Yesterday when I was driving it magically fixed itself for about a half hour. When I turned on the stereo, after half a song it all went to hell again and stopped working.

I was thinking it could be that I'm overloading the ignition wire circuit for my stereo because I had the stereo, e-cutout, and 3 gauges hooked up to it with an upgraded fuse, but when I unhooked everything but the stereo, the problem remained.

I have no idea what to check. HELP!!!

 

start takin the harness in the dash apart, there's wires shorting together somewhere

 

i agree sounds like a short in the wiring....looks like u need some diagrams

 

It was a fuse...
found it... one down from the top left.....


The brakes are still attached to the parking lights tho... any ideas?

 

like i said before.....wires shorted together

 

ya never use an "upgraded fuse" cuz it's really a "fire-starter".

Wiring is sized to a certain amperage. WHen you pull more amps through it it will heat up (small wire) and begin to melt. left alone long enough it will catch fire.

run a new circuit from the battery or use a relay.

 

you have crossed wires

 

The problem you are having is not a power supply problem
it is a lack of ground. One way to search for it is with a test light.
Connect the lights ground to a known true ground. then start
probing device grounds with the other end while all the devices
are on. If the light comes on you got it. You can also just run
test grounds.The best place to start is where other people
have added stuff. Good luck. RD