wire color code
 

Is there wire color for fuel pressure guage? I have hawk 600's W/ MSD ign. . Guages peg out when ign. is on. Anyone have any sug. Could use some advice. THANKS!!

Jeff, sounds like a major ground problem. After a general look over of the ground system, behind the dash and ground block itself, I'd start disconnecting senders one by one to determine which wire has the issue. If they are all pegging its either coming through the main harness or behind the dash where common power and grounding are being pulled from. Fuel pressure is not generally stock from the factory and could be any color - should be easy to find at the sender though. Good Luck.

Rod

Thanks Rod. good hearing from you. All grounds check out. But I will check the senders Thanks!