frank5079

I am slowly finishing up my '95 F150 300 w/ an M5OD gearbox to 351 swap. I have the radiator core support in place and I am laying and arranging the engine harness. The 351 and harness are from a '95 F250 with auto trans. So here's my question; I have mounted the two airbag sensors onto the core support but there are no corresponding plugs to plug into. Am I going to have to find a '95 F150 engine harness with a 351???

Steve83

The impact sensors don't connect to the engine harness; they connect to the engine BAY harness, which is usually the same for all available gas engines on that chassis that year. Airbags were not required on vehicles >8500GVWR until '98, so an F250HD or heavier truck won't have them. F250LDs & F150s do. Depending on exactly how your truck was built, the '94 bay harness MIGHT connect to the '95 engine & transmission harnesses. You'll have to compare them pin-by-pin. I don't advise plugging them together & seeing what catches fire to find out if they'll work.

frank5079

Sorry...yes the engine bay harness. I made a deal with the guy I bought the engine from and he threw in everything I needed for the swap.....

frank5079

Well I got an engine bay harness for a '95 F150 with a 351 and everything works including my wipers and radio which didn't work with the F250 harness, but my airbag light is still flashing.....what gives???

BLDTruth

The flashes are usually codes. Count the flashes and the pauses.

Example - 4 flashes, pause, 1 flash, repeat would be a 4 1 code


https://www.ford-trucks.com/forums/1...l#post13129492

frank5079

Ok then....well I counted the blinks and I get 4 flashes then a pause and then another 4 flashes.....which is...44 RH Front Air Bag Sensor and Bracket Not Mounted to Vehicle Properly

So I am going to remove that sensor (which seems to be mounted properly) and try to reinstall it.

Steve83

No, you should TEST it electrically to see if that code is valid or not. First, study this & its caption:


(phone app link)

Then, disturbing as LITTLE as possible at each step:
1) unplug the ADM & test the RHF sensor circuits (note that they are in BOTH connectors) for continuity (to each other or ground, as indicated by that diagram);
2) unplug the RHF sensor and re-test the sensor side of the connector the same way;
3) test from the ADM connector to the harness side of the sensor connector for continuity along each wire, and for a LACK of continuity (open circuit, infinite resistance) from any wire to any other wire.

Reconnect everything after you finish testing, and post all your results (more detail & photos are better).