Subject: Did you pull th cluster and see if it has the battery type SI board? Also look Author: royinga as Roy In GA : member since February, 2004 : 6165 posts Posted on: 2010-04-06 10:58:53

at the ETM wiring diagrams on the e38.org/e28 site. You can verify that the 2 wires to the diff are OK. They go from the big white plug on the cluster to the diff.

• Speed Sensor (spedometer) replacement? - patty28 2010-03-28 19:23:05 (2183 views)
  • It's in the back of the diff, 2 wires and they rarely go bad (nt) - Roy In GA 2010-03-28 20:53:59 (2315 views)
    • Re: It's in the back of the diff, 2 wires and they rarely go bad - patty28 2010-03-29 12:25:20 (2040 views)
      • More likely the cluster. The SI board batteries go bad. It is a small board in - Roy In GA 2010-03-30 10:49:58 (2064 views)
        • Ok, so if I'm looking at the back of the instrument cluster, what does - patty28 2010-04-01 10:31:05 (1915 views)
          • Diff cover is the differential rear cover. The SI board is buried inside of th - Roy In GA 2010-04-02 23:41:28 (2091 views)
            • I think you may need to write that in the regular field. Sorry. It cut you off.. (nt) - patty28 2010-04-05 11:49:49 (1923 views)
              • Nevermind, my bad........ - patty28 2010-04-05 11:51:49 (2116 views)
                • Did you pull th cluster and see if it has the battery type SI board? Also look - Roy In GA 2010-04-06 10:58:53 (2007 views)
            • I think you may need to write that in the regular field. Sorry. It cut you off.. (nt) - patty28 2010-04-05 11:49:44 (1998 views)