 Djet Injection on late cars, 75-76 |
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| PancakePorsche |
 Dec 5 2011, 07:31 PM
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#21
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Member  Group: Members Posts: 236 Joined: 29-July 11 From: Southern California Member No.: 13,373 Region Association: None  |
If I had to guess it shunts trigger point signal to the ECU momentarily to control speed. It does not interrupt the signal because it runs fine without it. Just my theory.
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| JeffBowlsby |
Dec 5 2011, 07:33 PM
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#22
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914 Wiring Harnesses Group: Members Posts: 8,663 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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Here is the circuit. It senses the trigger points (circuits 12, 12, 22) and TPS (circuit 17-off idle?). Circuit 16 and 24 are power to the ECU.
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