Can I replace the clock with an OBC

[duby55]

Can anyone tell me if the OBC from my 91 would work in my 92 that does not have an OBC. I'm kind of doubtful the wiring is set up for it to work. I could live without it but if it was simply a plug and play device I would do it.

[bmwrp8]

Can anyone tell me if the OBC from my 91 would work in my 92 that does not have an OBC. I'm kind of doubtful the wiring is set up for it to work. I could live without it but if it was simply a plug and play device I would do it.

it will work. i retrofited an obc in 89 525i. here this will help you. http://www.bmwe34.net/Wiki/tiki-index.php?page=OBC

[shogun]

BC IV retrofit
http://www.gunnar525.de/screwings/bc4_einbau.pdf
multifunction clock retrofit
http://www.gunnar525.de/screwings/mf-uhr_einbau.pdf
code chip retrofit in BC
http://www.gunnar525.de/screwings/bc4_umbau_codierstecker.pdf
BC FAQ
http://www.gunnar525.de/screwings/bc4_faq.pdf

all in German, but the pics will help you