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P2 Factory trailer light harness 30664652 , trailer module

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

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br0dy519
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Re: P2 Factory trailer light harness 30664652 , trailer module

Post by br0dy519 »

FWIW : I used the 14486 U-Haul 4-Way Flat trailer adapter to wire up my XC70. I had to install a fuse in order to power that harness that I fed into , so I figured it was fused anyways. The kit comes with everything you need even the tool-free splices.

You could forget about the trailer adapter and just splice into the tail lights behind the carpet panel on the left. Just use an analog meter or 12v tester light like he does and just wire and fuse accordingly. It's not as complicated as Volvo would like to make you believe it is :mrgreen: of course they want to sell you a $200 plus 1 hour VIDA labour to software load it... typical stealership behaviour
04s60 2.4
04xc70 2.5t
prwood wrote:I wish I had a permanent car repair area that was covered, had a level surface, lighting and fans, a workbench, and tool cabinets. You know,like a garage. Much of my time during the job is spent hauling things up and down the stairs to the basement or in and out of the storage shed, or running back downstairs when I realize I need something else,or taking a break from standing out in the sun,or using flashlights or work lamps when it gets dark.

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erikv11
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Post by erikv11 »

OK thanks! I didn't want to tap into the tail light wiring. I just added an edit to my previous post too - I think you are right, one of these universal converters (U-haul, Curt, etc) will work fine on an 07 too.
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

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erikv11
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Post by erikv11 »

II could not find a plug back there on my 07 XC70, so I tapped into wires as per this video https://www.etrailer.com/tv-install-tra ... 76kit.aspx using T connectors. Tomorrow I'll test the hookup.
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

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abscate
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Post by abscate »

The kit comes with everything you need even the tool-free splices.
If those are those vampire clip on splices they are tools of the AntiChrist. In any kind of weather climate, those will cause you pain and suffering
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread

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erikv11
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Post by erikv11 »

Works great, happy with the low cost and low install effort.

In case that video ever goes away, here is the instructions:

Driver side wires tapped into:
- green wire on car for left turn signal, to yellow wire on Curt unit
- yellow wire on car for brakes, to red wire on unit
- gray/white wire on car for tails i.e. running lights, to brown wire on unit
- also attached ground there (white from the unit), by sanding paint off frame in a small spot and drilling a hole
- power wire (black from the unit) is also over here using an inline fuse and running 14 gauge wire to the battery

Passenger side wires tapped into:
- green/white wire on car for right turn signal, to green wire on unit

EDIT: corrected right/left designation on turn signal wires
Last edited by erikv11 on 01 Feb 2023, 13:12, edited 1 time in total.
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

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br0dy519
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Joined: 17 December 2019
Year and Model: 2004 XC70
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Post by br0dy519 »

abscate wrote: 30 Apr 2022, 02:38
The kit comes with everything you need even the tool-free splices.
If those are those vampire clip on splices they are tools of the AntiChrist. In any kind of weather climate, those will cause you pain and suffering
I much prefer crimp-on buttsplices (not sure what the technical term is for them), but the snap lock things they included in the kit worked fine. Seemed properly sized for the gauge of wire running to that harness. Like everything, time will tell
04s60 2.4
04xc70 2.5t
prwood wrote:I wish I had a permanent car repair area that was covered, had a level surface, lighting and fans, a workbench, and tool cabinets. You know,like a garage. Much of my time during the job is spent hauling things up and down the stairs to the basement or in and out of the storage shed, or running back downstairs when I realize I need something else,or taking a break from standing out in the sun,or using flashlights or work lamps when it gets dark.

scot850
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Post by scot850 »

The wiring harness has 3 harnesses available (well were available) with a 4,7,13 pin socket on them. The standard is the 4 pin flat harness, but the main harness has connectors to add the 2 other options built into it.

viewtopic.php?p=629942&hilit=Hitch+harness#p629942

Hope that helps.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold

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