Cigarette lighter woes 1983 k25

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

C

Croc1990

Full Access Member
Joined
Jul 14, 2017
Posts
101
Reaction score
27
Location
Saskatchewan, canada
First Name
Dakota
Truck Year
1983
Truck Model
K25
Engine Size
5.7
1983 GMC Sierra k25
So my truck didn't have a cigarette lighter so I put one in months ago and tested with test light was getting power to the socket so I called her good. Never used it.
Anyway forgot lighter so figured just use the cigarette lighter. Lighter would pop wasn't getting hot.
Took out threw a test light on socket was getting power tried again nothing.
I noticed the bottom courtesy lights under the dash were coming on every time was depressed.
And it ended up blowing the horn fuse as well.
I'm pretty sure that orange wire is for the lighter, all other lights are hooked up.
So I'm a little confused as what's going on.
 

Attachments

  • IMG_20241008_201938020.jpg
    IMG_20241008_201938020.jpg
    57.4 KB · Views: 19
  • IMG_20241008_201948486.jpg
    IMG_20241008_201948486.jpg
    61.1 KB · Views: 20
Last edited:
R

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,446
Reaction score
8,684
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Croc1990 said:
So my truck didn't have a cigarette lighter so I put one in months ago and tested with test light was getting power to the socket so I called her good. Never used it.
Anyway forgot lighter so figured just use the cigarette lighter. Lighter would pop wasn't getting hot.
Took out threw a test light on socket was getting power tried again nothing.
I noticed the bottom courtesy lights under the dash were coming on every time was depressed.
And it ended up blowing the horn fuse as well.
I'm pretty sure that orange wire is for the lighter, all other lights are hooked up.
So I'm a little confused as what's going on.
Click to expand...
Well it would seem that the orange wire is not the correct power wire. I can't look for a wiring schematic without knowing year and model so. I just remembered what I can do to see your make and model,so now that Ive looked at that Ill try to find a schematic. On the future your posts shoukd include what you are wirking on. It makes people trying to helps life easier and helps get more accurate information. This is what most if us see on first look at your post.
 

Attachments

  • Screenshot_2024-10-08_215650.jpg
    Screenshot_2024-10-08_215650.jpg
    92.6 KB · Views: 21
R

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,446
Reaction score
8,684
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Looks like it should be orange with a stripe. I believe straight orange goes to headlight switch. @Jgonick is really good at finding accurate wiring diaghrams,me not so much,hopefully he'll read this and pitch in. 1983 k25. I looked up a 75 k25.
 
Last edited:
C

Croc1990

Full Access Member
Joined
Jul 14, 2017
Posts
101
Reaction score
27
Location
Saskatchewan, canada
First Name
Dakota
Truck Year
1983
Truck Model
K25
Engine Size
5.7
I'll do some more digging around see if I missed a wire. That orange wire was just sitting there I assumed that's what it went to
 
Jgonick

Jgonick

Full Access Member
Joined
Jan 12, 2017
Posts
297
Reaction score
377
Location
West Texas
First Name
Joel
Truck Year
1985
Truck Model
K10
Engine Size
350
ORN-240 Splits off horn relay and continues to lighter

the HORN-DM fuse would be the correct fuse.
 

Attachments

  • 83fuse.jpg
    83fuse.jpg
    82.9 KB · Views: 33
  • 83cig.jpg
    83cig.jpg
    38.3 KB · Views: 33
Last edited:
AuroraGirl

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,693
Reaction score
6,869
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
theres more than one orange wire on that harness
 
Jgonick

Jgonick

Full Access Member
Joined
Jan 12, 2017
Posts
297
Reaction score
377
Location
West Texas
First Name
Joel
Truck Year
1985
Truck Model
K10
Engine Size
350
Croc1990 said:
I noticed the bottom courtesy lights under the dash were coming on every time was depressed.
Click to expand...
power comes from ORN-40 wire coming from light switch(splits there). Not sure why they would be coming on- they are somehow being grounded. They are suppose to be grounded through the white wire WHT-156 that runs to the light switch and/or the door jamb switch. The white wire splits to the dome light and door jamb at the courtesy light usually.

Just a side note- Dome light gets power from ORN-140 but shares WHT-156 to ground it.
 

Attachments

  • court.jpg
    court.jpg
    103 KB · Views: 19
Last edited:
AuroraGirl

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,693
Reaction score
6,869
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
There should be an orange wire with a copper/brass spade connector that gives power to the cig lighter, id imagine it grounds to the ashtray itself or it uses the dash ground (i think it grounds through the ashtray)
is the "other" orange wire, the other one leads to that light

Some year must have used an orange with black stripe to the cig lighter, I have the ashtray assembly out of I think a 1977 K20, and i believe that the harness was factory, and heres some parts of it
You must be registered for see images attach

The spade connector would have been on the cig lighter

The white wire and orange to the lamp you see are stock. The 194 bulb base for the ashtray lamp is also attached to this harness, mine is just hanging , I ran the ground to my dash of my f150

And then I ran the power to my dome lamp to piggyback for the floor (easiest to do on this ford)
 
Jgonick

Jgonick

Full Access Member
Joined
Jan 12, 2017
Posts
297
Reaction score
377
Location
West Texas
First Name
Joel
Truck Year
1985
Truck Model
K10
Engine Size
350

Attachments

  • 79.png
    79.png
    47.8 KB · Views: 17
  • 78.png
    78.png
    17.2 KB · Views: 15
C

Croc1990

Full Access Member
Joined
Jul 14, 2017
Posts
101
Reaction score
27
Location
Saskatchewan, canada
First Name
Dakota
Truck Year
1983
Truck Model
K25
Engine Size
5.7
Yeah that wiring is what I got going on too. Could these door plunger things be the culprit? They too have never worked lol
If they are would unhooking them solve the issue you figure?
Drivers side is broken/missing plunger piece
 

Attachments

  • IMG_20241008_215654233.jpg
    IMG_20241008_215654233.jpg
    114.4 KB · Views: 19
  • IMG_20241009_185424495.jpg
    IMG_20241009_185424495.jpg
    101.6 KB · Views: 17
  • IMG_20241009_185309176.jpg
    IMG_20241009_185309176.jpg
    94.7 KB · Views: 18
R

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,446
Reaction score
8,684
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
well I think I figured out what's going on,He's picking up power at the ground side of the courtesy lights,somehow. When he pushes in the lighter the lights light in series with the cigarette lighter,like christmas tree lights. Since the voltage is divided by the 2 loads he doesn't have tge voltage to heat the element.
 
Jgonick

Jgonick

Full Access Member
Joined
Jan 12, 2017
Posts
297
Reaction score
377
Location
West Texas
First Name
Joel
Truck Year
1985
Truck Model
K10
Engine Size
350
Croc1990 said:
unhooking them solve the issue you figure?
Click to expand...
In theory, if the door jamb switches were grounding your courtesy & dome light would be on all the time. The courtesy & dome light have power all the time (unless the fuses are blown)- Check the "T/L CTSY" & "HORN DM" fuses
Does your dome & courtesy light work when you twist the light pull switch? (this grounds them at the light switch)


The door jamb switches are not very expensive and easy to replace. Around 84ish you can disconnect them right before they go through the grommet in side wall heading to the door. I'm not sure if there is a connector there on 83.

Ricko1966 said:
well I think I figured out what's going on,He's picking up power at the ground side of the courtesy lights,somehow
Click to expand...
Makes sense to me- Just have to figure out how.

If I'm thinking correctly- he could remove the courtesy (and possibly dome also) light bulbs & see if his cig lighter works.
 
Last edited:
AuroraGirl

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,693
Reaction score
6,869
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
Jgonick said:
In theory, if the door jamb switches were grounding your courtesy & dome light would be on all the time. The courtesy & dome light have power all the time (unless the fuses are blown)- Check the "T/L CTSY" & "HORN DM" fuses
Does your dome & courtesy light work when you twist the light pull switch? (this grounds them at the light switch)


The door jamb switches are not very expensive and easy to replace. Around 84ish you can disconnect them right before they go through the grommet in side wall heading to the door. I'm not sure if there is a connector there on 83.


Makes sense to me- Just have to figure out how.

If I'm thinking correctly- he could remove the courtesy (and possibly dome also) light bulbs & see if his cig lighter works.
Click to expand...
the ash tray light probably too
 
You must log in or register to reply here.

Similar threads

84GMCSierra
Cig lighter phone holder issue
Replies
7
Views
725
84GMCSierra
84GMCSierra
Mark80K15
No driver's side rear turn signal or brake light, because no power at bulkhead
Replies
12
Views
252
Mark80K15
Mark80K15
RadChad
Headlight switch power and meltdown
Replies
5
Views
820
Ricko1966
R
EdJr
No Horn, Courtesy or Bed light
Replies
2
Views
1K
Matt69olds
Matt69olds
RanchWelder
Electrical dash wiring / wire color issues.
Replies
6
Views
2K
RanchWelder
RanchWelder

Latest posts

Forum statistics

Threads
44,162
Posts
950,639
Members
36,273
Latest member
dannyphx
Top