Difficulty wiring 7 way trailer hitch wiring 07 trailblazer
#1
Difficulty wiring 7 way trailer hitch wiring 07 trailblazer
Difficulty wiring 7 way trailer hitch wiring 07 trailblazer
I have a 7 pin round tail/brake/blicker/anti brake reverse all I can manage to get working are the right/left brakelight/blicker can’t get the taillights on.
Here’s what I’ve connected all from trailer end plug.
pos1- ground black
pos7 trailer antireverse lockout. black
Pos3 tail light brown from yellow/green
pos5 green
pos2 yellow
I do have continuity on my wiring, and I’ve checked all the fuses under the seat all have continunity.
Not yet checked at the underhood fuse block there’s these associated w/ trailer
4 Back-Up-Trailer Lamps
32 Trailer
Additionally I have removed the radio circuit fuse the NAV unit took a dump and created a major drain 3.3amps on battery I could reinstall the fuse maybe the taillights go though the radio circuit. since radio unit is removed
Thanks for any helpful advice
edit: when I check the taillights I turn on the headlights, note the pass. side low beam circuit is faulty will check it's fuse and or replace bulb,
will a open low beam circuit effect the no trailer taillight issues?
I have tryed both methods in last images the only way I could brake light/blickers on was the yellow diagram. but still no taillights.
n
I have a 7 pin round tail/brake/blicker/anti brake reverse all I can manage to get working are the right/left brakelight/blicker can’t get the taillights on.
Here’s what I’ve connected all from trailer end plug.
pos1- ground black
pos7 trailer antireverse lockout. black
Pos3 tail light brown from yellow/green
pos5 green
pos2 yellow
I do have continuity on my wiring, and I’ve checked all the fuses under the seat all have continunity.
Not yet checked at the underhood fuse block there’s these associated w/ trailer
4 Back-Up-Trailer Lamps
32 Trailer
Additionally I have removed the radio circuit fuse the NAV unit took a dump and created a major drain 3.3amps on battery I could reinstall the fuse maybe the taillights go though the radio circuit. since radio unit is removed
Thanks for any helpful advice
edit: when I check the taillights I turn on the headlights, note the pass. side low beam circuit is faulty will check it's fuse and or replace bulb,
will a open low beam circuit effect the no trailer taillight issues?
I have tryed both methods in last images the only way I could brake light/blickers on was the yellow diagram. but still no taillights.
n
Last edited by thebrain; 04-28-2018 at 07:47 AM.
#4
Yes the tail lights worked fine w/ the van and it’s flat 4 pin coupler.
Now w/ the new lighter tow vehicle I added brakes to the boat trailer so I need a anti- reverse lockout for my surge actuater.
The new tow vehicle has a 7 pin coupler however no tail lights.
Not sure if I have power to the tail lights all I know is they won’t come on.
Don’t want to rip the interia apart for a single tail-light wire.
I'm using a LED for one light the other is just regular incandesent and the filament is intact.
Now w/ the new lighter tow vehicle I added brakes to the boat trailer so I need a anti- reverse lockout for my surge actuater.
The new tow vehicle has a 7 pin coupler however no tail lights.
Not sure if I have power to the tail lights all I know is they won’t come on.
Don’t want to rip the interia apart for a single tail-light wire.
I'm using a LED for one light the other is just regular incandesent and the filament is intact.
#5
TECH Regular
iTrader: (5)
Did the Saab come factory wired for the tow package or did you add it? Check for power there first, then at the wiring for the tail lights. If there is no power there, then the issue is within the truck itself. If there is power there and nothing at the tail light, you need to trace from there to the connection for the tow rig. My first suspicion would be when it was converted from flat 4 to round 7.
What do you mean by "inertia" when talking about ripping it apart?
What do you mean by "inertia" when talking about ripping it apart?
#6
yes the tow wiring is from Saab
the wiring from the vehicle end attached at hitch then the wires run under body to middle of vehicle then under carpet to a couple anfewnall connecters in oder to fully trace this wire I would need to rip apart the back seat and carpeting.
w/ headlights on I will check for voltage at #4 on the vehicle end and report back
I think #7 is interferring w/ tails who knows what all other circuits on on the same circuit as the tails are
thanks
the wiring from the vehicle end attached at hitch then the wires run under body to middle of vehicle then under carpet to a couple anfewnall connecters in oder to fully trace this wire I would need to rip apart the back seat and carpeting.
w/ headlights on I will check for voltage at #4 on the vehicle end and report back
I think #7 is interferring w/ tails who knows what all other circuits on on the same circuit as the tails are
thanks
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#8
Custm2500's Rude Friend
iTrader: (17)
Did you check these fuse for power? #10 instrument panel fuse box and #10 rear trunk?
Got the info from here.
Saab 9-3 (2007) ? fuse box diagram | Auto Genius
Got the info from here.
Saab 9-3 (2007) ? fuse box diagram | Auto Genius
#10
excellent link however it's a 97x.Saab 9-7X (2007 ? 2008) ? fuse box diagram | Auto Genius
the V8 fuse block #24 is instrument panel. this fuse has continuity and the display displays inside the dash.
I confirm to have 3 circuits functioning 50,51 & 52.brake/blinker/hazard so it must be tail light, during my wiring the tail lights where only grounded w/ the white wire not individually to the trailer frame.
but the first thing I need is to powerup the pin#4
07 saab 97x trailer plug pin #4 wire
the V8 fuse block #24 is instrument panel. this fuse has continuity and the display displays inside the dash.
I confirm to have 3 circuits functioning 50,51 & 52.brake/blinker/hazard so it must be tail light, during my wiring the tail lights where only grounded w/ the white wire not individually to the trailer frame.
but the first thing I need is to powerup the pin#4
07 saab 97x trailer plug pin #4 wire
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