[Vwdiesel] Rabbit electrical problem

[LBaird119 at aol.com]

  The oil light glowing gives you a good clue.  Sounds like a bad ground 
and it's worse when wet.  Remove and clean where the ground cable 
connects to the body and the transmission.  Before you do, you could 
grab you favorite DMM or VOM and check for voltage across each 
connection (with something turned on).  It'll verify the bad connection.  
  To test for a draw, the easy thing is a 12V test light. Remove a battery 
cable and connect it between the cable and the battery.  If it glows visibly 
then you have enough draw to drain the battery. Start disconnection 
fuses etc, until you disconnect the draw then chase down from there. 
  Also would be good to check the connections and ground from the 
alt.
  Could be water in the relay panel but sounds more like a bad ground 
problem.  Relay panel would be wet if water's leaking in.  Check the 
radio antenna wire specifically.  It's where most of the water tends to 
run in from, through the inner fender.
     Loren