Hi Folks
BMW E38 V8 740i RHD
The High level brake lamp as fitted to later models - 1996> used a regular 21W incandecent bulb.
However the earlier models did not have this fitted and mine came with an aftermarket version with 6 x 3W bulbs. When this decided to die on me I bought exactly the same unit but the designe had been changed to use LED instead of incandescent bulbs.
Problem - the OBC unit checks all bulbs every 5 seconds by sending a low voltage pulse through the system. The incandescent bulbs do not react to this and the resistance is too high but the OBC knows that all filaments are in circuit.
THe replacement LED unit is wired exactly the same as the old unit but it flashes every 5 seconds due to the OBC check.
Any ideas how to eliminate the flashing and keep the LED unit (Looks nice)
Hugh
Sir Hugh of Bognor
The difference between men and boys is the price of their toys. Intelligence is not knowing the answer but knowing where and how to find it!
Hugh Gundersen snipped-for-privacy@h-gee.co.uk Bognor Regis, W.Sussex, England, UK