 Convert back to D Jet Fuel Injection-, Wire harnessess- Injector Ground |
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| young55961 |
 Jun 18 2026, 02:34 PM
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#1
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Newbie  Group: Members Posts: 30 Joined: 15-March 18 From: Arcadia Member No.: 21,972 Region Association: Southern California  |
I have a question about the ECU wiring harness.
There are three pairs of white wires with female spade terminals on the harness. I believe they are the ground wires for the fuel injectors, but I can't find where they are supposed to connect. Should these wires be connected to the negative (-) terminal of the ignition coil? If anyone has a photo showing the correct connection, I would really appreciate it. Thank you! |
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| brant |
Jun 18 2026, 02:46 PM
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#2
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914 Wizard Group: Members Posts: 12,213 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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There was supposed to be a three prong connector on the rear engine block through bolt
Back center of engine bay |
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| JeffBowlsby |
Jun 18 2026, 02:46 PM
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#3
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 9,282 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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2 of the three pairs are injector grounds. The third pair is grounds for the ECU and TPS.
They attach to a Tri-spade male terminal located on an engine case through-bolt at the top rear of the engine case, under the air plenum. |
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| young55961 |
Jun 18 2026, 02:52 PM
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#4
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Newbie Group: Members Posts: 30 Joined: 15-March 18 From: Arcadia Member No.: 21,972 Region Association: Southern California |
QUOTE(JeffBowlsby @ Jun 18 2026, 03:46 PM)  2 of the three pairs are injector grounds. The third pair is grounds for the ECU and TPS. They attach to a Tri-spade male terminal located on an engine case through-bolt at the top rear of the engine case, under the air plenum. Tks. Let me check. |
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