740 towbar wiring

griston64 · Jan 10th, 2022, 17:19

Does anybody know where the towbar wiring connects on a 740 estate ? Is there a grommet entry point somewhere ?

Cheers, Mark

Ian21401 · Jan 10th, 2022, 21:31

Hello Mark,
I cannot comment regarding the 740 but on my 1992 940 there was no such connection. I had to use a bypass relay and a smart relay and “pick-a-back” from the wiring harness behind the rear nearside load area trim. There is a thread on here somewhere that I used for guidance.

Ian21401 · Jan 11th, 2022, 11:19

Mark,
Hopefully this is one of the threads.

https://www.volvoforums.org.uk/showt...t=Bypass+relay

Laird Scooby · Jan 11th, 2022, 13:30

You have two choices Mark, either do what Ian did or take the feeds for the trailer wiring from upstream of the BFU - your Haynes Book of Fantasy (HBoF) will come in useful for wire colours etc) and run the 7-core all the way to the electrical unit behind the ashtray.

griston64 · Jan 11th, 2022, 14:39

Quote:

Originally Posted by Laird Scooby

You have two choices Mark, either do what Ian did or take the feeds for the trailer wiring from upstream of the BFU - your Haynes Book of Fantasy (HBoF) will come in useful for wire colours etc) and run the 7-core all the way to the electrical unit behind the ashtray.

It was more where the actual cable from the towbar enters the car

Luke has managed to feed it in via the grommet in rear cubby thingy

Jan 10th, 2022, 17:19	#1
griston64 Premier Member Last Online: Today 07:12 Join Date: Jul 2012 Location: Lenzie	740 towbar wiring Does anybody know where the towbar wiring connects on a 740 estate ? Is there a grommet entry point somewhere ? Cheers, Mark __________________ V70 D5 SE Geartronic 215bhp Saville Grey 2012MY 940 LPT Manual 1996 740 SE 1990

Jan 10th, 2022, 21:31	#2
Ian21401 Premier Member Last Online: Feb 11th, 2023 20:32 Join Date: May 2010 Location: Blyth, Northumberland	Hello Mark, I cannot comment regarding the 740 but on my 1992 940 there was no such connection. I had to use a bypass relay and a smart relay and “pick-a-back” from the wiring harness behind the rear nearside load area trim. There is a thread on here somewhere that I used for guidance. __________________ Ian. Since 2005: 1992 Volvo 940 estate 2.0L. Manual. Daily driver and workhorse.

Jan 11th, 2022, 11:19	#3
Ian21401 Premier Member Last Online: Feb 11th, 2023 20:32 Join Date: May 2010 Location: Blyth, Northumberland	Mark, Hopefully this is one of the threads. https://www.volvoforums.org.uk/showt...t=Bypass+relay __________________ Ian. Since 2005: 1992 Volvo 940 estate 2.0L. Manual. Daily driver and workhorse.

Jan 11th, 2022, 13:30	#4
Laird Scooby Premier Member Last Online: Today 12:22 Join Date: May 2012 Location: Lakenheath	You have two choices Mark, either do what Ian did or take the feeds for the trailer wiring from upstream of the BFU - your Haynes Book of Fantasy (HBoF) will come in useful for wire colours etc) and run the 7-core all the way to the electrical unit behind the ashtray. __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

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