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Old 03-22-2017, 11:57 AM   #12
ChevyTech
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Join Date: May 2004
Location: Minnesota
Posts: 4,620
Re: 350 TBI Swap Hiccup :/

Quote:
The injectors do get power at the fuse box, I have tested their fuse using a test light and I showed that in the first video I posted. But when I check them at the injectors end point there's no power at all.
You are going to have to trace the power wires for the injectors from the fuse box out to the TBI unit. I would be looking at the connector that was on the passenger side in the donor truck just before the big harness goes out through the wire wall to the engine compartment.

Quote:
For the ignition switch, I am using the original 70 switch, ...
The TBI trucks had multiple power supply circuits through the ignition switch.

The purple wire in the photo is an oxygen senor wire. Earlier TBI trucks had the O2 sensor on the passenger side and later it was move to the drivers side.

For the lack of power in part of the fuse box the first place I would look is the first two fusible links on the left end of the junction block.
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For those of you that are wondering why you are not getting replies to your thread:
Did you give the model, year, engine, fuel system type, and transmission information?
If it is modified from what came stock from the factory, let us know that too.
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