I need to replace my coil but nobody around here can tell me if it's for the internal or external resistor. The engine is a 4.3 V6 with electronic ignition. the coil say Mercury marine thunderbolt IV with a part number 392-7803. Can anybody tell me what kind of coil this is?
is my coil internal or external resistor? 1988 sea ray
- Thread starter mvvette97
- Start date
- Nov 12, 2006
- 5,334
- Boat Info
- 1999 Sea Ray 330DA
Twin 7.4 MPI (310 propshaft HP) V-drives
- Engines
- Twin Mercury Marine marinized 7.4L L-29 V8s
Cast iron block w 4-bolt mains
External.
