PSOM or connection
Thread Starter
|
More Turbo
Joined: Nov 2013
Posts: 557
Likes: 8
From: arkansas
PSOM or connection
Blew the dome light fuse while wiggling the battery cable trying to start truck (93 f150) .Speedo & odometer both quit. Replaced fuse, checked all others, still no speedo. Some searching says when both go suddenly, could be a connection.Any ideas where to start, or did i do the PSOM in?
More Turbo
Joined: Oct 2009
Posts: 596
Likes: 58
From: West Plains, MO
My '93 F250 had that circuit (54 on Fuse 8, light green with yellow stripe) fried in the harness when I got it, most likely due to incompetent stereo installation and improper fuse rating. I fixed it and then the dome lights worked but the odometer didn't. Not sure about the speedo too but it all comes off the PSOM as you note.
They'd rigged another line to the power for the PSOM which I'd removed along with all the other hacks. Once I reconnected the PSOM to circuit 54/fuse 8, all was working again.
That circuit also powers: glovebox lamps, courtesy lamps, cargo lamp, power mirrors, and the stock radio. Do all those things work now except the PSOM?
I have a .pdf of the relevant power distribution schematic which I downloaded from bbbind.com, attached. Only connection could be splice S214 but I don't know where it is physically...
They'd rigged another line to the power for the PSOM which I'd removed along with all the other hacks. Once I reconnected the PSOM to circuit 54/fuse 8, all was working again.
That circuit also powers: glovebox lamps, courtesy lamps, cargo lamp, power mirrors, and the stock radio. Do all those things work now except the PSOM?
I have a .pdf of the relevant power distribution schematic which I downloaded from bbbind.com, attached. Only connection could be splice S214 but I don't know where it is physically...
Thread Starter
|
More Turbo
Joined: Nov 2013
Posts: 557
Likes: 8
From: arkansas
Yes, the radio & cargo lamp work.Not sure if the glove box light works, but will check. I know the complete history of this truck, only wiring other than original is a trailer plug, installed by Ford, it may even be factory. I had the door open when i was working with the battery connection, the on/off power is what i figure blew the fuse initally.Just want to check all options before replacing or rebuilding the speedometer. Thanks for your intrest & help.
Thread
Thread Starter
Forum
Replies
Last Post
coltonimo
1987 - 1996 F150 & Larger F-Series Trucks
11
Sep 16, 2020 08:08 AM
rcaryl
1987 - 1996 F150 & Larger F-Series Trucks
7
Jan 5, 2005 09:26 PM
