Diffuaculty wiring 7 waytrailer hitch wiring 07 trailblazer
April 27th, 2018, 8:03 PM
#1
CF Active Member
Thread Starter
Diffuaculty wiring 7 waytrailer hitch wiring 07 trailblazer
Diffuaculty wiring 7 waytrailer hitch wiring 07 trailblazer
I have green and lighter green on pass. Tail light , side so I still I haven’t found the taillights taillight or blicker. When I reverse this connection w/ other green I get no blicker or taillight.
Edit: I do have continuity from front to back of trailer pass. Side wire.
It’s use’s a normal color code of yellow being blicker and brown being taillight. My next couple steps will be establish continuity for front/ to back driverside trailer wire.
Then observe the location on the driver tail lights brown wire this is tail lights so now I can find the pass. Side blicker wire.
Here’s what I’ve connected all from trailer end
pos1- ground
pos7 trailer antireverse lockout.
Pos3 tail light
?2.I assume pos3 actualley has two wires pass.driver taillights both normalley brown?
Pos5 right turn green. I got confussed her I thought I could wire each circuit indidualley like I either connect blicker or I connect tail/ or brake light however when I reversed the working right blicker then the taillight wouldn’t come on.
I can only manage to get the brake lights /blickers to work the tail lights will not come on.
Attach image of how I have it connected. Plus I ground white wire’s at trailer end and at each lights end.
I assume I’m not getting a connection from the OEM 7 pin plug.
Maybe I could remove taillight then tap into the taillights wire for a source?
Attachments
Any tips
I have green and lighter green on pass. Tail light , side so I still I haven’t found the taillights taillight or blicker. When I reverse this connection w/ other green I get no blicker or taillight.
Edit: I do have continuity from front to back of trailer pass. Side wire.
It’s use’s a normal color code of yellow being blicker and brown being taillight. My next couple steps will be establish continuity for front/ to back driverside trailer wire.
Then observe the location on the driver tail lights brown wire this is tail lights so now I can find the pass. Side blicker wire.
Here’s what I’ve connected all from trailer end
pos1- ground
pos7 trailer antireverse lockout.
Pos3 tail light
?2.I assume pos3 actualley has two wires pass.driver taillights both normalley brown?
Pos5 right turn green. I got confussed her I thought I could wire each circuit indidualley like I either connect blicker or I connect tail/ or brake light however when I reversed the working right blicker then the taillight wouldn’t come on.
I can only manage to get the brake lights /blickers to work the tail lights will not come on.
Attach image of how I have it connected. Plus I ground white wire’s at trailer end and at each lights end.
I assume I’m not getting a connection from the OEM 7 pin plug.
Maybe I could remove taillight then tap into the taillights wire for a source?
Attachments
Any tips
April 27th, 2018, 10:17 PM
#2
is there not a blunt cut wiring harness at the back left frame rail? Have a look, it may all be there? these trucks are made to tow, chevy should have at least put the wires for a 4 pin connector. My old sierra didnt come with a hitch but the wires for the 4 pin were there taped up in a loom. All i had to do was run my 12 volt power and brake controller wires.
Last edited by tech2; April 27th, 2018 at 10:22 PM.
April 28th, 2018, 10:01 AM
#4
sorry I can't make sense of what your asking in the first post.
If you found the blunt cut wiring harness and need to connect it to a 7pin connector; the wire colours are:
light green =back up lights- center pin
white= grd - 9:00 o'clock position
dark blue= trailer auxilary power/brake controller input- 7:00
dark green= right turn stoplamp - 5:00
red= 12 v all times- 3:00
brown= park lamps- 1:00
yellow= left turn/stop lamp- 11:00
If you found the blunt cut wiring harness and need to connect it to a 7pin connector; the wire colours are:
light green =back up lights- center pin
white= grd - 9:00 o'clock position
dark blue= trailer auxilary power/brake controller input- 7:00
dark green= right turn stoplamp - 5:00
red= 12 v all times- 3:00
brown= park lamps- 1:00
yellow= left turn/stop lamp- 11:00
April 28th, 2018, 12:18 PM
#5
CF Active Member
Thread Starter
sorry I can't make sense of what your asking in the first post.
If you found the blunt cut wiring harness and need to connect it to a 7pin connector; the wire colours are:
light green =back up lights- center pin
white= grd - 9:00 o'clock position
dark blue= trailer auxilary power/brake controller input- 7:00
dark green= right turn stoplamp - 5:00
red= 12 v all times- 3:00
brown= park lamps- 1:00
yellow= left turn/stop lamp- 11:00
If you found the blunt cut wiring harness and need to connect it to a 7pin connector; the wire colours are:
light green =back up lights- center pin
white= grd - 9:00 o'clock position
dark blue= trailer auxilary power/brake controller input- 7:00
dark green= right turn stoplamp - 5:00
red= 12 v all times- 3:00
brown= park lamps- 1:00
yellow= left turn/stop lamp- 11:00
according to you I don't have a single wire connected correctly. plus I'm missing auxilary power
light green =back up lights- center pin this for brake anti lock reverse solenoid.
white= grd - 9:00 o'clock position I have at o'clock position 7
dark blue= trailer auxilary power/brake controller input- 7:00 don't have this wire.
dark green= right turn stoplamp - 5:00 I have at o'clock position3
red= 12 v all times- 3:00 don't have this wire
brown= park lamps- 1:00 I have at o'clock position11
yellow= left turn/stop lamp- 11:00 I have at o'clock position9
Last edited by the Brain; April 28th, 2018 at 12:25 PM.