its a 1988 528e and theres a few things i got to ask bout it.one y would the intirior lights not come on right away when i open the door? it takes like 10 to 15 seconds befor they turn on. two what would make the spedomiter stop working and how would i go about fixing it?

these car had a soldered 2-AA rechargeable battery soldered to the circuit board (motherboard) at the bottom of the speedometer. as you know rechargeable battery will stop accepting charge. deterioate and chemical leaked out and damaged the circuit on the board. remove the speedometer and relocate the battery with a radio shack battery holder. it is quite a task. you don't need to remove the steering wheel to get the speedometer out. good luck. they want around 300$ for a rebuilt one. i found out how-to from roadfly

its a 1988 528e and theres a few things i got to ask bout it.one y would the intirior lights not come on right away when i open the door? it takes like 10 to 15 seconds befor they turn on. two what would make the spedomiter stop working and how would i go about fixing it?

it would be easier to find one at your local pick n pull. i have had luck there.

i need a speedo wireing diagram i just took the speedo out without disconnecting any wires from the back and i saw a few wires that were unhooked and i think there sposed to be hooked to the back of the speedo but i dont know where they hook to.

heres the pictures. the firs one has arrows where i think ther should go the second one is the wires. i dont know whitch way to put them and if i did it wrong maby it coud shourt somthing else.

http://i163.photobucket.com/albums/t290/estatesbburnin/cluster.jpg

http://i163.photobucket.com/albums/t290/estatesbburnin/Picture035.jpg

does anyone have a picture of the 1988 528e cluster from the backside with the wires still attached?

There will be a few plugs back there that dont connect to anything. Mine has those blue plugs going to nothing if i remember correctly

ok how do i get the batterys out and what kind of battery do i put in? i took the cluster apart and the batterys dont look to good nither does the connections for the speedo so im gonna crean it up. this is where i am now.

http://i163.photobucket.com/albums/t290/estatesbburnin/Picture038.jpg

ok where can i get that entire board. i did a bit more investigating and found that the bottom side of that board is rotted and all the connections on the spedo side are corroded so bad that the metal strips in the board are shot.

no one knows where i can get that board?

ok then can i use a newer cluster in my 528E?

When I still had my '88 528e the speedo stopped working because a fuse blew out.

belive me its not a fuse.

yup dont worrie people i will find it myself thanks everyone!

You can get one from the dealer, not sure how much it is, but im sure its not cheap. Couple hundred bucks anyways.

I'm parting out a 1988 528e. I have those parts, just not ready to to take them out until the snow is melted off the car. Gimme a day or two, it's going to hit mid-60's here in Mass tomorrow, that should do it.

As for the lights not coming on when you open the door, there's a 3-position rocker switch left side of the steering column. Be sure it's in the middle position. Then, get a little WD40 on the door switch's plunger.

dont worrie bout them parts. im gettin another 528e with a blown head gasket and swapin my moter into it. thers nothing wrong with the other car exept the blown gasket.

ok i do need those parts. the car got sold befor i got to it. yesterday. one day to late.

I'll get my son to pull them after he gets out of school tomorrow. We have a Bentley's manual, so he should be OK. PM me for contact info.

sounds more like a bad speed sensor in the diff. This would cause the speedo to stop working.

Not sure about the light delay..........

no its the circut board in the bvack of the speedo that went bad. took it completly out and can clearly see the riped lines and corrosion in there.

I have the whole unit out, ready to go. What's it worth?

Contact me at my e-mail addy:kp.mitchell@verizon.net