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timmy2 timmy2 is online now
ROW '78 911 Targa
 
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Join Date: Jul 2011
Location: Salem, OR
Posts: 10,217
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For Daves test ,the top fuse should be constant 12 vdc. The lower one is fed by the same circuit as the CDI power supply is on.
If a different 12 v supply fixes the problem, then go up front and move the red wire from terminal 8 to terminal 7 and see if the problem goes away. (Alternatively jumper terminal 7 to terminal 8)
If it does, it is the fuse block internal jumper. If it doesn’t it may be the ignition switch.
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Dennis
Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C
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Old 02-27-2022, 05:43 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)