Front sidelight glowing

murphyv310 · 18th June 2015, 19:43

Hi .
My offside front side light is glowing slightly. There is 5.3v across the bulb and this rises to 10v will the bulb removed thus no load on the circuit. I've not delved any further so far. Anyone had this fault before?

klarzy · 18th June 2015, 19:55

Quote:

Originally Posted by murphyv310

Hi .
My offside front side light is glowing slightly. There is 5.3v across the bulb and this rises to 10v will the bulb removed thus no load on the circuit. I've not delved any further so far. Anyone had this fault before?

have you tries popping a different light switch module in temporarily to see if it cures it?

andrewinpopayan · 18th June 2015, 20:02

Dodgy, probably corroded connector in the cable block >somewhere<, I presume the n/s headlight/sidelight and o/s headlight works OK, which would rule out a bad earth.

Wiring harness runs from nearside to offside, if the n/s light is ok, trace the wiring thru the maze of plug blocks over to the o/s, all runs behind the bumper.

There is a common earthing point on the o/s chassis rail near the o/s outer headlight (big cluster of black wires)

murphyv310 · 18th June 2015, 20:04

Quote:

Originally Posted by klarzy-dials.com

have you tries popping a different light switch module in temporarily to see if it cures it?

No.
I only noticed this late last night and gave up before it was too dark, had folk in tonight so no chance to do any other diagnoses. The LSM is coded anyway so I don't think it's a like for like swap even if I had one.

suzublu · 18th June 2015, 20:05

Check the loom where it runs over the chassis rail, notorious for wearing through & causing shorts

klarzy · 18th June 2015, 20:07

Quote:

Originally Posted by murphyv310

No.
I only noticed this late last night and gave up before it was too dark, had folk in tonight so no chance to do any other diagnoses. The LSM is coded anyway so I don't think it's a like for like swap even if I had one.

no but trying one for a minute will tell you if it is to blame or not....

also as said the chassis rail...

roverbarmy · 18th June 2015, 20:13

A bad (corroded) earth on the system can lead to earthing back through the bulb. It used to happen a lot on truck rear lights due to salt corrosion where the wiring joints were exposed. The brake lights used to earth through the flashers and glow.
Mike

murphyv310 · 18th June 2015, 20:14

A job for Saturday then. I'll give the suggestions a try and report back.
Thanks chaps

andrewinpopayan · 18th June 2015, 20:33

Quote:

Originally Posted by roverbarmy

It used to happen a lot on truck rear lights due to salt corrosion where the wiring joints were exposed.
Mike

And Kilmarnock is near enough the seaside

murphyv310 · 4th July 2015, 20:19

Hi.
This has been a right pain to track down, so far with no success. I've disconnected the LSM, and painstakenly been right through the loom.
Oddly the problem goes away for many hours then comes back for the same length of time.
The loom looks fine no chafing or any exposed cables.

18th June 2015, 19:43	#1
murphyv310 This is my second home Hyundai i10 998cc Join Date: Mar 2012 Location: Kilmarnock Posts: 6,602 Thanks: 2,088 Thanked 2,298 Times in 1,349 Posts	Front sidelight glowing Hi . My offside front side light is glowing slightly. There is 5.3v across the bulb and this rises to 10v will the bulb removed thus no load on the circuit. I've not delved any further so far. Anyone had this fault before? __________________ Cheers from Trevor MM0KJJ

18th June 2015, 20:02	#3
andrewinpopayan Loves to post Rover 75 CDT manual tourer SE with farkles Join Date: May 2014 Location: Bradford BD12 Posts: 497 Thanks: 148 Thanked 73 Times in 62 Posts	Dodgy, probably corroded connector in the cable block >somewhere<, I presume the n/s headlight/sidelight and o/s headlight works OK, which would rule out a bad earth. Wiring harness runs from nearside to offside, if the n/s light is ok, trace the wiring thru the maze of plug blocks over to the o/s, all runs behind the bumper. There is a common earthing point on the o/s chassis rail near the o/s outer headlight (big cluster of black wires) __________________ 2001 75 2.0 CDT tourer. Bodges and "quick fixes" have a nasty habit of reminding you at the MOST inconvenient AND expensive time that you should have done the job properly in the first place.! Last edited by andrewinpopayan; 18th June 2015 at 20:15..

18th June 2015, 20:13	#7
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,125 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	A bad (corroded) earth on the system can lead to earthing back through the bulb. It used to happen a lot on truck rear lights due to salt corrosion where the wiring joints were exposed. The brake lights used to earth through the flashers and glow. Mike __________________ Oil in my veins!

18th June 2015, 20:14	#8
murphyv310 This is my second home Hyundai i10 998cc Join Date: Mar 2012 Location: Kilmarnock Posts: 6,602 Thanks: 2,088 Thanked 2,298 Times in 1,349 Posts	A job for Saturday then. I'll give the suggestions a try and report back. Thanks chaps __________________ Cheers from Trevor MM0KJJ

4th July 2015, 20:19	#10
murphyv310 This is my second home Hyundai i10 998cc Join Date: Mar 2012 Location: Kilmarnock Posts: 6,602 Thanks: 2,088 Thanked 2,298 Times in 1,349 Posts	Hi. This has been a right pain to track down, so far with no success. I've disconnected the LSM, and painstakenly been right through the loom. Oddly the problem goes away for many hours then comes back for the same length of time. The loom looks fine no chafing or any exposed cables. __________________ Cheers from Trevor MM0KJJ

18th June 2015, 20:05	#5
suzublu This is my second home rover 75 1.8 vvc club se wedgwood blue Join Date: Aug 2009 Location: Seaton Carew Posts: 26,986 Thanks: 65 Thanked 7,142 Times in 4,642 Posts	Check the loom where it runs over the chassis rail, notorious for wearing through & causing shorts