UPDATE YOUR BOOKMARKS: The new URL for the site is CHEVYGMCVANS.COM

See the "Announcements" section for more 2021 forum update details

Trailer wiring for your van.

User avatar

Smiliesafari
ASV Supporter
ASV Supporter
Posts: 2667
Joined: Sat Dec 02, 2006 12:34 pm
Location: Orlando, FL

Re: Trailer wiring for your van.

Post by Smiliesafari »

Drill a hole near the steering column. Use a grommet to protect the wiring. A piece of fuel hose makes a good substitute. I did this when I installed the strobe lights in my van. \:D/
1996 Safari SLX Hotair balloon transport vehicle
User avatar

Rileysowner
I plan to be buried in my van
Posts: 1290
Joined: Sat Sep 09, 2006 7:14 pm
Location: Exeter ON
Contact:

Re: Trailer wiring for your van.

Post by Rileysowner »

I will have to have a look and see around there for a spot.
"I have a torque wrench and I am not afraid to use it."
Jim
1997 GMC Safari RWD, Power Windows and Locks, 7 passenger, a/c, rear heat

http://rileysowner.blogspot.com/
User avatar

Rileysowner
I plan to be buried in my van
Posts: 1290
Joined: Sat Sep 09, 2006 7:14 pm
Location: Exeter ON
Contact:

Re: Trailer wiring for your van.

Post by Rileysowner »

Smiliesafari wrote:Drill a hole near the steering column. Use a grommet to protect the wiring. A piece of fuel hose makes a good substitute. I did this when I installed the strobe lights in my van. \:D/
I need a smaller drill. I was going to drill a hole today, but I can't find my gromets (I think my boy moved them on me). I tried to fit the drill with a small pilot bit and so far little success. I'm not sure if I am happy with the location either. Gotta keep looking.
"I have a torque wrench and I am not afraid to use it."
Jim
1997 GMC Safari RWD, Power Windows and Locks, 7 passenger, a/c, rear heat

http://rileysowner.blogspot.com/
User avatar

Rileysowner
I plan to be buried in my van
Posts: 1290
Joined: Sat Sep 09, 2006 7:14 pm
Location: Exeter ON
Contact:

Re: Trailer wiring for your van.

Post by Rileysowner »

Finally found a point where I could fit my drill to drill through. Drilled, installed grommet, and got wires through. I still need to solder them, but I can't find my heat shrink tubing, so that will have to wait another day.
"I have a torque wrench and I am not afraid to use it."
Jim
1997 GMC Safari RWD, Power Windows and Locks, 7 passenger, a/c, rear heat

http://rileysowner.blogspot.com/

California
I am smitten with my van
Posts: 32
Joined: Mon Oct 19, 2009 3:26 pm
Location: England via California

Re: Trailer wiring for your van.

Post by California »

If you have a factory tow package, the factory wires will be bundled in the right rear of the van in the jack storage area.
Man I just can't find it, is there some sort of hidden door or something? I removed the jack and the hand vac yet I don't see anything. My van came with a tow bar..

Image

Could it be on the other side? Whats behind that grill?
Image

LiftedAWDAstro
I have my van tatooed on my cheeks
Posts: 4379
Joined: Sat Sep 09, 2006 3:35 pm
Location: New Haven, NY

Re: Trailer wiring for your van.

Post by LiftedAWDAstro »

Yes, it could be behind the left side panel. My 95 conversion was.
Current rides:
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition

Mileage spreadsheet

Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy

California
I am smitten with my van
Posts: 32
Joined: Mon Oct 19, 2009 3:26 pm
Location: England via California

Re: Trailer wiring for your van.

Post by California »

Cool I'll go check it now.

California
I am smitten with my van
Posts: 32
Joined: Mon Oct 19, 2009 3:26 pm
Location: England via California

Re: Trailer wiring for your van.

Post by California »

Mystery solved

After searching I had a look under the van and the bracket that held the loom/connector at some point either broke or rusted away and was tucked up and around the tow bar out of site. I'll get a new bracket for it next week and remount.
Thank you for the hints and tips.

astronewbie
I am merely driving my van
I am merely driving my van
Posts: 7
Joined: Mon Jun 28, 2010 12:53 pm
Location: White Lake, Michigan

Re: Trailer wiring for your van.

Post by astronewbie »

First time on this forum. I am in the process of wiring a 7 pin connector for may travel trailer. This post is very helpful. My van has the tow package so there is the bundle of wires in the jack stowage area. The thing is, I can't seem to find the black wire for the 12 volt power in the bundle. Am I missing something or do I need to run a separate wire for the 12v power? It seems like it would be with the other wires????

I also picked up an LPD aux trans cooler and will be installing that this weekend.
2002 Astro AWD LT
- 95,000 miles
- Tow pkg
- Aux trans cooler

Kidhauler
I sleep in my van
Posts: 877
Joined: Wed Sep 13, 2006 5:46 pm
Location: Vancouver B.C.

Re: Trailer wiring for your van.

Post by Kidhauler »

I believe that the 12v power wire is red. It should have a label on it with about a 15amp or 30 amp rating.
1999 Safari Touring edition.
trailer tow pack with a 3:73 posi
Bucket bench seats, Rear heat, Rear Airconditioning.
teal green
300 000 kms
AirRide air bags in the rear to fix soft stock suspension.
Onboard aircompressor to make it all work nice.

JumboJet
I am merely driving my van
I am merely driving my van
Posts: 1
Joined: Sat Jan 16, 2016 6:58 pm

Re: Trailer wiring for your van.

Post by JumboJet »

Does anyone still have the pic (line 11) referred to in v8famvan's first post in this thread? Thank you!

"The other ends of the orange & dark blue wires will be tucked under the carpet in the left front of the vehicle. Like in this pic."
User avatar

Snowgeek
I finally get the smurf thing
Posts: 161
Joined: Sun Feb 12, 2012 7:10 am
Location: Boise, Id
Contact:

Re: Trailer wiring for your van.

Post by Snowgeek »

Ok so I see the orange wire for the 12v in the left front of the van but not seeing where that plugs in. Do i need to take the fuse block off and plug it in behind or does it go somewhere else?

I had a 7 pin harness that has been there since i got the van but with my new trailer it all seems messed up. It is weird that although the 7 pin was there that the orwnge 12v was never connected.

Any help would be great!

Ryan
2004 Astro (was AWD now 4X4) 125,000 miles: purchased April 2012
Colorado Camper Van poptop
4" Overland lift, Rancho 5000 Cooper AT3 245/75/16 C,
4x4 - NP236 Transfercase
Propex HS2211 propane heater
I am copying a few of you hope you don't mind!

See my build here
User avatar

Snowgeek
I finally get the smurf thing
Posts: 161
Joined: Sun Feb 12, 2012 7:10 am
Location: Boise, Id
Contact:

Re: Trailer wiring for your van.

Post by Snowgeek »

Update.... I kept looking at that fuse block and seeing colors listed and thought none said orange (the color of the wire) but really it is listing the color of the connector.... thus it was sitting right in front of my face. All done now and my wiring works.

Ryan
2004 Astro (was AWD now 4X4) 125,000 miles: purchased April 2012
Colorado Camper Van poptop
4" Overland lift, Rancho 5000 Cooper AT3 245/75/16 C,
4x4 - NP236 Transfercase
Propex HS2211 propane heater
I am copying a few of you hope you don't mind!

See my build here

Bret Schmerker
I get chills without my van.
Posts: 70
Joined: Sun Jul 29, 2018 6:02 pm
Location: Byron, CA, USA
Been thanked: 1 time

Re: Trailer wiring for your van.

Post by Bret Schmerker »

:cheers: Thanks for keeping everybody up to date on this Thread. I'm currently researching a fuse and relay block backport to my 1997 GMC M11006, and the trailer prep harness contains the following circuits:

9 - 0.8 BR Tail Mrkr Lic
18 - 1.0 YL, Left Brake-Turn
19 - 1.0 DGN, Right Brake-Turn
20 - 1.0 WH, Ctr H/M Stop
24 - 1.0 LGN, Back Up
1642 - 2.0 OR, +Vcc Upfit Bat
1647 - 2.0 DBL, Trailer Brake Drive
1650 - 2.0 WH, -Vss Common

The Pollak® PK 12-907 (nine pins) would provide for all lights, the trailer brake drive, and the +Vcc Upfit Batt to recharge any batteries on the trailer; the same manufacturer's PK 12-707E (Center pin plus six blades) would be short the center stop lamp circuit. The fuse/relay backport is slated to use at least five HELLA® H41773001 solid-state relays (Hella AG P/N 9 317 739 87) for the tail, left brake-turn, right brake-turn, center brake, and reverse circuits, plus a PAINLESS® 70117 for individual light-circuit fusing; I anticipate a mechanical relay inline with Circuit 1642 for Aux Power at the trailer, and the trailer brake drive and -Vss will be direct-connected to the PK chosen. With a new 100A circuit-breakered "Hot at All Times" wire to feed the relay load sides via the fuses, the additional circuits should be:

1602 - 3.0 RD, +Vcc Afterbody (from BATT)
1609 - 1.0 BR, Trailer Tail
1618 - 1.0 YL, Trailer LT Brake-Turn
1619 - 1.0 DGN, Trailer RT Brake-Turn
1620 - 1.0 LBL, Trailer Ctr Brake
1624 - 1.0 Trailer B/U and Brake Defeat
1997 GMC M11006 (Safari SLE, 2WD, V6-4300/4L60-E/7.625" 3.73:1 open)
Acquired Jul 2018 / In service Sep 2018 - present

Bret Schmerker
I get chills without my van.
Posts: 70
Joined: Sun Jul 29, 2018 6:02 pm
Location: Byron, CA, USA
Been thanked: 1 time

Re: Trailer wiring for your van.

Post by Bret Schmerker »

:-k Addendum: Pollak® is actually expecting the following AWG and colors for the PK 12-907:

1609 - 14 GN Trlr Tail Lic Run
1618 - 14 RD Trlr LH Stop Dir
1619 - 14 BR Trlr RH Stop Dir
1620 - 14 OR Trlr Ctr Stop
1624 - 14 YL Trlr B/U and Surge Brk Defeat
1639 - 12 GY Trlr Batt Chg Rly
1642 - 8 BK Trlr Batt +Vcc
1647 - 12 BL Trlr Brake Drive
1650 - 8 WH Trlr -Vss

And for the PK 12-707E:

1609 - 14 GN Trlr Tail Lic Run
1618 - 14 RD Trlr LH Stop Dir
1619 - 14 BR Trlr RH Stop Dir
1624 - 14 YL Trlr B/U and Surge Brk Defeat
1642 - 10 BK Trlr Batt +Vcc
1647 - 12 BL Trlr Brake Drive
1650 - 10 WH Trlr -Vss
1997 GMC M11006 (Safari SLE, 2WD, V6-4300/4L60-E/7.625" 3.73:1 open)
Acquired Jul 2018 / In service Sep 2018 - present
Post Reply