Wiring harness question

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Jul 24, 2024 | 10:49 AM

WELCMETOTHEPARTY

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4wd Low

Joined: Jul 2024

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Wiring harness question

Hello to all. If i am using a 1993 ford f-150 5.0 engine top wiring harness on a 1995 5.0 engine and truck will it work? which firing order would i be using, the 94+ or pre 94 firing order?

thanks in advance boyz

Jul 24, 2024 | 11:01 AM

jas88

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Joined: Feb 2002

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From: Greater Austin, Texas

You must use the firing order that matches the camshaft so the 95 order in this case.

Jul 24, 2024 | 11:17 AM

rla2005

Fleet Owner

Joined: Oct 2005

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From: Kentucky

The 1995 5L engine is most likely using Mass Airflow (MAF) as well as sequential fuel injection and the ignition is Computer Controlled Dwell (CCD). The 1993 harness is for Speed Density fuel injection and the older Push-Start ignition. There are multiple wiring differences. Why are you wanting to use the 1993 harness?

Jul 24, 2024 | 12:53 PM

WELCMETOTHEPARTY

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4wd Low

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Quote:

Originally Posted by rla2005

I bought this 1995 and am it is a project for me. The top engine wiring harness was butchered and in bad shape from the previous owner. Did not want to go through the headache of splicing wires to get it back to normal mainly because of the condition that it was in. Was at the junky and came across a 93 that had the harness in tact and grabbed it. Would def prefer a 95 harness but as you may know these trucks are more of a rarity nowadays and barely at any junkyard near me. And so that is why I am using this 93 harness. The differences that I can physically see between the original 95 harness and this 93 is that this 93 one does not have connector for the switch that goes onto the AC line at the compressor. Which is an issue I will have to figure out later my priority right now is getting the truck to run with this harness.

you are correct my 95 is a MAF engine

Ps thanks to you guys for the taking time to help me out

Jul 24, 2024 | 02:18 PM

My4Fordtrucks

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The ‘93 used R-12 refrigerant so that is why there is no connector for a high pressure switch.

Jul 24, 2024 | 03:41 PM

Conanski

FTE Legend

Joined: Jun 2006

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From: Ottawa, Ontario

That engine harness is missing 6 injector wires, 4 MAF meter wires and the connector, and the wiring and connectors for the remote mount ignition module and matching distributor.. another 6 wires and 2 connectors. It may be easier to repair the original engine harness.