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Trans swap 91 c4

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Old Sep 14, 2025 | 10:29 AM
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andrewrice1
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Default Trans swap 91 c4

Hello all, I have recently tried swapping from the 700r4 trans to a zf6 speed transmission. I have the transmission installed but the car will not start. Not sure what I’m missing as far as if it’s neutral safety switch related or if I’m missing some connector that might stop the car from starting. Lights on dash but turning the key nothings happens. Power goes to starter but isn’t getting signal. Any help is appreciated. Thanks!
can upload pics if needed. Also want to mention I do have a security system installed on the car.
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Old Sep 14, 2025 | 10:51 AM
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Originally Posted by andrewrice1
Hello all, I have recently tried swapping from the 700r4 trans to a zf6 speed transmission. I have the transmission installed but the car will not start. Not sure what I’m missing as far as if it’s neutral safety switch related or if I’m missing some connector that might stop the car from starting. Lights on dash but turning the key nothings happens. Power goes to starter but isn’t getting signal. Any help is appreciated. Thanks!
can upload pics if needed. Also want to mention I do have a security system installed on the car.
The wires to the neutral starting switch are usually moved to the safety switch on the clutch pedal. When I did my swap I bypassed the relay. I learned to drive many years before clutch safety switches were a thing.
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Old Sep 14, 2025 | 10:54 AM
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andrewrice1
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Originally Posted by RWDsmoke
The wires to the neutral starting switch are usually moved to the safety switch on the clutch pedal. When I did my swap I bypassed the relay. I learned to drive many years before clutch safety switches were a thing.
Is thee neutral starting switch plugged into the shifter on the automatic?I would have to pull that wiring away from where the shifter is down to the pedals and wire it into the clutch switch?
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