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Originally Posted by TrybalRage
1. Oil pressure. My truck had a 1 wire hookup, and the new motor also has a 1 wire sensor on the back of the block. I see a lot of people swapping sensors and needing adapters... why? Are these providing different signals?
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Gauges and senders are a matched pair. All senders are not the same. So, you can't run the old gauge and the new sender and expect an accurate reading.
Quote:
Originally Posted by TrybalRage
2. TCC lockup. I currently have a blue wire coming out of the firewall that used to go to the old th350 wiring, and it provides hot 12v until I press the brake. It seems like this is exactly what I need for the pcm, yet I see people all the time talking about splicing in relays. Will this not work?
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Yes, it will work. You are most likely reading about swaps into vehicles that didn't have that functionality before the swap. It is something common to add into older swap vehicles.