Bypass relay for towbar electrics

scottebayb · 19th March 2010, 11:11

Hi all,
just fitted a towbar to my Rover 75 2001. On fitting the electrics and Ryder 7 way bypass relay I have now found that when i turn the car's lights on and press the 2 buttons for the fog lights not only do the dashboard fog light display not show up it also stops the green indicator lights on the dashboard from working although the fog lights and indicators are working on the car, of course when i disconnect the 12v live feed from the bypass relay all is fine, any help is appreciated please, TIA

mikey_32 · 19th March 2010, 16:28

Hi Scott, all I can say is obviousely you've got somethiing crossed here unless you're unlucky enough to have picked up a dodgy 7 way bypass filter, I've fitted 2 of these units to 2 different 75's and not had a problem, all of the lighting on a 75 is computer controlled and also operates on a bounce back (which you don't need to worry about) hence us needing the bypass, I suggest you check and then recheck your wiring that suppplys the relay and were you've made the connection to the car, I'm sure you'll find something, the simplest of mistakes can cause no end of faults on these cars.
Mike

scottebayb · 19th March 2010, 18:40

Hi Mikey, Many thanks for your help. I have found that the problem was because i used a spare plug which was hanging on its own in the right hand side of the boot, it had 4 wires coming from it, one was permanent live. I used that live to power the bypass relay. It did say in the instructions to use either a connection from the battery or from the fuse box. On connecting the live feed straight to the battery instead of that spare plug everything was Perfect. (Note To Self) always read instructions

...again thanks.

19th March 2010, 11:11	#1
scottebayb Newbie Rover 75 2.0CDT Connosieur Join Date: Jan 2009 Location: Northampton Posts: 15 Thanks: 0 Thanked 0 Times in 0 Posts	Bypass relay for towbar electrics Hi all, just fitted a towbar to my Rover 75 2001. On fitting the electrics and Ryder 7 way bypass relay I have now found that when i turn the car's lights on and press the 2 buttons for the fog lights not only do the dashboard fog light display not show up it also stops the green indicator lights on the dashboard from working although the fog lights and indicators are working on the car, of course when i disconnect the 12v live feed from the bypass relay all is fine, any help is appreciated please, TIA

19th March 2010, 16:28	#2
mikey_32 Loves to post Rover 75 Tourer 02 club se cdt remapped Join Date: Dec 2006 Location: Cannock South Staffs Posts: 270 Thanks: 0 Thanked 1 Time in 1 Post	Hi Scott, all I can say is obviousely you've got somethiing crossed here unless you're unlucky enough to have picked up a dodgy 7 way bypass filter, I've fitted 2 of these units to 2 different 75's and not had a problem, all of the lighting on a 75 is computer controlled and also operates on a bounce back (which you don't need to worry about) hence us needing the bypass, I suggest you check and then recheck your wiring that suppplys the relay and were you've made the connection to the car, I'm sure you'll find something, the simplest of mistakes can cause no end of faults on these cars. Mike __________________

19th March 2010, 18:40	#3
scottebayb Newbie Rover 75 2.0CDT Connosieur Join Date: Jan 2009 Location: Northampton Posts: 15 Thanks: 0 Thanked 0 Times in 0 Posts	Hi Mikey, Many thanks for your help. I have found that the problem was because i used a spare plug which was hanging on its own in the right hand side of the boot, it had 4 wires coming from it, one was permanent live. I used that live to power the bypass relay. It did say in the instructions to use either a connection from the battery or from the fuse box. On connecting the live feed straight to the battery instead of that spare plug everything was Perfect. (Note To Self) always read instructions ...again thanks.