1984 F-150 Wiring Harness Question

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1984 F-150 Wiring Harness Question

JG2020
Going through my "new to me" F-150
Checking all the fuses (1 burned out) and cleaning all the wiring terminals in the engine compartment.
I was having a slow starter issue but cleaning the neg cables to the starter and battery seems to have fixed that.

On the inside I get no dash lights at all. I am going to remove the dash to see whats up back there.

In the meantime I found these hanging out behind the glove box. One 4 prong was connected the rest were hanging free. I am looking through the diagrams to see what these are but if anyone knows off the top of their head what they are that would be great. The plug that was connected is the solo one on the left of the glove box . Maybe a radio connection? No radio is installed yet.

From what I learned here it looks like I had a feedback carb at one point and I am thinking maybe these are related.

Just changed the oil and filter. Front shocks going in next which does not look too hard.

Thanks!
Josh




Josh G
1984 F-150 Inline-Six 300
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Re: 1984 F-150 Wiring Harness Question

BullnoseLuvr
I think the first one is for the radio.  In the second pic the brown one looks like it's for the key/headlight/seatbelt buzzer.  The gray upper left looks like its for the EEC relay.  The gray lower right I don't recognize.  It's probably for optional equipment.

That's my off-the-top-of my head take.

Mark
‘84 F150 4x4 351W 4sp. Regular cab, long bed, all original. '69 Continental MK III. Older restoration. '95 Saab 900S Convertible. '05 Saab 9-3 ARC Convertible 2.0T. Lime Yellow. '09 Saab 9-3 AERO Convertible 2.8T. Sand Beige top. '13 MINI Cooper Factory JCW 6sp. '01 H-D Sportster. '03 Yamaha FZ-1.
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Re: 1984 F-150 Wiring Harness Question

myrl883
In reply to this post by JG2020
The connector containing the blue/red wire is radio power, the bulb with the blue cover should be illuminating your ashtray, and the connector furthest to the left looks like the connector for the buzzer, but I can't see it very well.
Ford Parts Monkey since 1985
1981 F100 Flareside - Black, 302-4V Roller/AOD
1986 F150 Lariat 4x4 SWB - Black, 302/NP435
1986 F150 Flareside - Medium Fire Red 302/AOD
1986 F150 LWB "Parts Truck" - Red & Silver 302/AOD
1994 F250 4x4 Super Cab - 7.3 IDIT
I think it's a sickness...
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Re: 1984 F-150 Wiring Harness Question

BullnoseLuvr
In reply to this post by BullnoseLuvr
Or, I could be totally wrong.

Mark
‘84 F150 4x4 351W 4sp. Regular cab, long bed, all original. '69 Continental MK III. Older restoration. '95 Saab 900S Convertible. '05 Saab 9-3 ARC Convertible 2.0T. Lime Yellow. '09 Saab 9-3 AERO Convertible 2.8T. Sand Beige top. '13 MINI Cooper Factory JCW 6sp. '01 H-D Sportster. '03 Yamaha FZ-1.
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Re: 1984 F-150 Wiring Harness Question

JG2020
And that's electrical issues in a nut shell.
Josh G
1984 F-150 Inline-Six 300
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Re: 1984 F-150 Wiring Harness Question

BullnoseLuvr
In reply to this post by myrl883
You're right.  The connector to the far left is for the buzzer.
‘84 F150 4x4 351W 4sp. Regular cab, long bed, all original. '69 Continental MK III. Older restoration. '95 Saab 900S Convertible. '05 Saab 9-3 ARC Convertible 2.0T. Lime Yellow. '09 Saab 9-3 AERO Convertible 2.8T. Sand Beige top. '13 MINI Cooper Factory JCW 6sp. '01 H-D Sportster. '03 Yamaha FZ-1.
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Re: 1984 F-150 Wiring Harness Question

JG2020
Thanks for the guidance! I want to clean up all unnecessary wires as much as I can. Looks like I have a date with my testing light.
Josh G
1984 F-150 Inline-Six 300
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Re: 1984 F-150 Wiring Harness Question

FuzzFace2
You will have plugs for under dash lights, right door light switch and clock IIRC all up in there.
Dave ----
Dave G.
81 F100 flare side 300 six / AA OD / NP435 / 2.75 gear
http://cars.grantskingdom1.com/index.php/1980-Ford-F100?page=1
81 F100 style side 300 six/SROD parts truck -RIP
http://cars.grantskingdom1.com/index.php/1981-Ford-F100