On 10/7/2019 11:15 AM, Jim Wilkins wrote:
"Terry Coombs" wrote in message
...
On 10/5/2019 6:12 PM, Larry Jaques wrote:
On Tue, 24 Sep 2019 07:58:47 -0500, Terry Coombs
wrote:

When I got my truck back from our son , lots of things that he
just
couldn't be bothered to fix . One thing is the radio power supply
. He
did tell me that the radio had "died" , turns out the fuse (in the
fuse
block) keeps blowing . I've got the dashboard apart enough to
check the
wiring harness and supply wires , can't find any cuts or anything
that
looks like damaged insulation ... it works just fine sittin' in
the
driveway , but within a few miles driving it blows the fuse . I
figured
it was the radio/CD player unit so I got a new one , does the same
thing
. I'm really puzzled by this , from the way the fuse was spattered
it's
got to be a dead short to ground . I think it very unlikely that
the new
radio/CD unit is bad - the old one did work when I replaced the
fuse ,
for a few miles same as the new unit . This is an '86 GMC pickup ,
I'm
hoping someone here might be aware of a known problem area that I
might
check ... I gotta have tunes !
Check for any extra connections between the battery and radio. It
could be a loose connection. You'll find your extra amperage going
to
warm that connection.
Alt1: Run a separate fuse to a switched hot.
Alt2: earphones and your phone/MP3 player are a cheap and easy
pair.

--
There is s no such thing as a hyphenated American who is
a good American. The only man who is a good American is
the man who is an American and nothing else. We are a
nation, not a hodge-podge of foreign nationalities. We
are a people, and not a polyglot boarding house.
--Theodore Roosevelt
Catch up Larry , we've tracked it down to the converter lockup
solenoid/wiring inside the trans . Got the new solenoid right here ,
just need a couple of days to get it installed ... figure it would
be good to go ahead with the axle gear swap and installing the
correct drive gears in the trans . That means I need about 3-5 days
that I can do without the truck since I'm getting into stuff I've
never done before .

--
Snag
Yes , I'm old
and crochety - and armed .
Get outta my woods !

Did you check if the misconnected plug was grounding the fused wire
through the internal switch? The solenoid may not be bad.



Â* After correcting the orientation of the plug it still blows the fuse
but with it unplugged it doesn't ... so I think I've either got a burned
up coil or grounded wire somewhere . I need to change the oil and filter
anyway , so I'll be able to check it all while I've got it open .

--
Snag
Yes , I'm old
and crochety - and armed .
Get outta my woods !