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I get's it did!
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Discussion Starter #1
So, I'm almost done converting the Ex from a V10 to a 7.3, really all I have left to do is build the fuel system and I've run into a snag.

Everything has been savvy so far (alot of effin' work, but everything has jived), finally got everything to work from the dome lights to the rear air, even the rear vent switches, but then there's this... No power windows and the the power lock/unlock switch is running the wiper washe fluid. Either way I rock the switch it activates the wiper fluid pump.

Any idea what's going down?

I'm ready to get this thing outta my garage and on the road...
 

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I get's it did!
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376 Posts
Discussion Starter #2
Not everybody at once...








Hello?
 

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What wire harnesses did you swap; interior or under hood? That's the only way something like that could be happening. The pin-outs at the firewall bulkhead connectors must be different so that a switch for the door locks is activating the wiper fluid. I suggest locating the Electrical Vacuum Troubleshooting Manual (EVTM) for your year truck. It will show the wiring differences (pin locations) between a V10 and 7.3. There may be more mis-aligned wires that you haven't discovered yet.
 
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