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11
Electrical / Re: Horn help!
« Last post by bd on July 12, 2024, 11:07:44 AM »
What ? ! ? ! ?

JP ! !     I can't hear you over the racket of your blasted horn ! !   





You really ought to get that fixed.  ;D
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Members Rides / Re: 84 Jimmy Build
« Last post by Shifty on July 12, 2024, 10:11:24 AM »
That's a ton of ugly to cut off....
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Electrical / Re: Seat Belt light Stays on
« Last post by mamaya3367 on July 12, 2024, 08:58:48 AM »
Thank you for the explanation.  I will work on it this weekend.  Stay tuned for results.
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Members Rides / Re: 84 Jimmy Build
« Last post by 1981lt1 on July 11, 2024, 08:28:56 PM »
Since I'm still waiting for my new door hinges, and they likely won't be here this week, I started on the rust in the rear of the cab floor.  Of course, it wasn't just the floor pan, it had to be rotten in the support as well.







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Members Rides / Re: 84 Jimmy Build
« Last post by 1981lt1 on July 11, 2024, 08:15:09 PM »
Well, it looks like you have to skill set to overcome their lack of quality.

Look forward to your continued progress  ;)

Actually, i'm not afraid to cut things apart and i'm just a very good grinder!  My welding/fabrications skills are novice at best. 
16
Electrical / Re: Seat Belt light Stays on
« Last post by bd on July 11, 2024, 04:38:28 PM »
See the attached image and navigate to the 1986 Wiring Manual.pdf page 10.  It is useful to download the wiring manual to your hard drive for future reference.

I+ = ignition positive
B+ = battery positive
I/P = instrument panel
PC board (PCB) = printed circuit board

See Common Automotive (& Shorthand) Acronyms in our Technical Forum for more definitions.

The instrument cluster has a flexible die-cut printed circuit board (PCB) attached to its backside that connects all of the gauges, lamps, and indicators to the dash wiring harness via a 2-row, 18-pin connector.  "Foil" refers to the thin copper circuit traces that wind around the PCB to various locations, each circuit following a separate conductive trace.

On extremely rare occasions, the circuit board traces are not properly indexed with the die-cut of the board.  Consequently, adjacent circuits that are intended to be separate can be cross-connected if the die cut was supposed to sever a circuit trace but didn't quite.  It is a covertly devious fault and difficult to find because the board was manufactured that way so appears unmolested.  Fortunately, this scenario is more common with aftermarket PCBs than OEM boards.
17
Electrical / Re: Seat Belt light Stays on
« Last post by mamaya3367 on July 11, 2024, 02:05:38 PM »

Thanks for the help.  I am comfortable with reading schematics.  I clicked the link but I'm having difficulty finding the circuit.  Can you tell me which pages to concentrate on?  Also, can you define I+ and B+?  When you say I/P foil pc board is this where all the bulbs connect on the back of the guage cluster?
18
Electrical / Re: Seat Belt light Stays on
« Last post by bd on July 10, 2024, 10:36:51 PM »
How comfortable are you with interpreting wiring diagrams?  From memory, the seatbelt indicator light receives I+ and the alarm module completes the light ground to illuminate it.  If the light glows with the alarm module removed, the implication is a grounded circuit 237 (yellow) wire running between the I/P Cluster PC board and the alarm module socket, or a grounded PC board foil.  With the ignition switched ON, use an incandescent test light clipped to I+ or B+ and probe the yellow wire that connects to the convenience center alarm module socket with the module removed.  Refer to the 1986 factory wiring manual for a schematic diagram that indicates which socket terminal to probe.  Does the test light illuminate?
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Electrical / Re: Seat Belt light Stays on
« Last post by mamaya3367 on July 10, 2024, 09:26:56 PM »
Yes
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Electrical / Re: Seat Belt light Stays on
« Last post by bd on July 10, 2024, 09:20:47 PM »
The seat belt lamp is on with the alarm module unplugged?
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