 
  problem is the tacho pulse when I switch on the indercator with headlights on
 or if I place hi beams on it drops out completly and the oil light comes on
 or if I place hi beams on it drops out completly and the oil light comes on   
 I have a dual battery setup with a redarc isolator the negative on the main battrey gets alot of corrsion on it
thought I would ask before going to a autoelec
Thanks in advance for any help you can provide



