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Post by vetanari on Jan 27, 2020 10:17:19 GMT
Hi,, I'm hoping someone can help me with a problem with my 1969 P5b The off side tail light isn't working (the near side one is ok) but the brake light is ok
I'm getting 1.5v at the connector in the boot next to the battery To my limited knowledge of wiring, this would suggest that if the wiring is ok in the brake light circuit then the problem must be somewhere between the light switch and where the wiring joins the brake circuit Does anyone know where they join up and why is the other tail light working?
As a bit of background, the car has been off the road for a decade and some previous owners appear to have had a sense of humour when it came to repairing electrical faults...
PS Does anyone know if the wiring diagram pdf is still available, and if so where from? |
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Post by johnwp5bcoupe on Jan 27, 2020 14:50:05 GMT
Hi,, I'm hoping someone can help me with a problem with my 1969 P5b The off side tail light isn't working (the near side one is ok) but the brake light is ok
I'm getting 1.5v at the connector in the boot next to the battery To my limited knowledge of wiring, this would suggest that if the wiring is ok in the brake light circuit then the problem must be somewhere between the light switch and where the wiring joins the brake circuit Does anyone know where they join up and why is the other tail light working?
As a bit of background, the car has been off the road for a decade and some previous owners appear to have had a sense of humour when it came to repairing electrical faults...
PS Does anyone know if the wiring diagram pdf is still available, and if so where from? The Stop Lights are in parallel green and purple wires and there "should" be only one single bullet connector between where there is a double where they join up! If you are a member the latest diagram is available. |
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Post by vetanari on Jan 27, 2020 15:09:23 GMT
Hi, I am a member and read somewhere that I should email someone for the pdf but I can't find the email address...
There must be a point somewhere that the tail light and brake light wiring joins up but I've no idea where Even the original diagram is a long shot The car has been the victim of some serious bodges from previous owners. The cable leading to the rear repeater is white when leaving the boot at the tail light and black when it arrives at the repeater. God knows what route it takes  |
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Post by djm16 on Jan 27, 2020 15:13:07 GMT
I take it that the 4w tail light does not work on the drivers side. I am also going to assume that it has been like this since you bought the car?
Check that the front side lights both work. If the offside front side light is also not working, then the problem is likely to be with the lighting switch which is three position: side lights, off and parking lights. It is very easy to get the wiring of this switch mixed up and have unexpected combinations of lights coming on.
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Post by johnwp5bcoupe on Jan 27, 2020 17:08:06 GMT
Email sent  |
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Post by vetanari on Jan 27, 2020 18:57:37 GMT
Thanks for that!! I can put away the magnifying glass and the workshop manual now  |
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Post by vetanari on Jan 27, 2020 19:06:23 GMT
I'm slowly restoring the car after a 10 year hiatus (where real life interrupted) and have only recently started on the electrics. When I started, the only light that worked was the nearside tail/parking lamp! I've replaced the rear o/side bulb holder and the tail light worked briefly before chucking it I'll order a new 3 way switch and cross my fingers Both front sidelights are knackered but they can wait their turn  |
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Post by Sam Bee on Jan 27, 2020 20:23:43 GMT
The lighting wiring in the boot area of my car was a real mess. Here is a photo of my O/S rear as I found it, but it did include towbar connections. But my lights all worked, somehow!  |
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Post by Brendan69 on Jan 28, 2020 10:44:16 GMT
Is it possible those pesky little rodents have been in there munching???
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Post by vetanari on Jan 28, 2020 18:07:14 GMT
With this car, anything is possible!!
I'll have a look at the switch and see what horrors lie behind the instrument panel
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Post by Sam Bee on Jan 28, 2020 18:39:10 GMT
No sign of rodents. More like a homo sapiens bodger!
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Post by djm16 on Jan 28, 2020 22:36:02 GMT
Could be worse, could have been a honey bodger.
Re the switch, it may be fine, just wired incorrectly.
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Post by vetanari on Feb 3, 2020 18:51:14 GMT
An update...
The switch gas been replaced
I'm now getting a voltage at the fuse box but still no power to the rear tail light
The cable leaving the fuse box is braided but it is a different cable when appears in the passenger foot well
So, does anyone know where the braided cable stops and the pvc (?) one meet?
PS one consolation of replacing the switch is that I now have power at the fuse box for the fog lights
(and the joy of trying to stick the instrument panel back together again!!)
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Post by Phil Nottingham on Feb 4, 2020 9:46:21 GMT
There is a bunch of bullet tucked well inside the n/s A Post - you need to unclip the panel. Water from rust holes, screen seal and craked joints causes corrosion+
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Post by vetanari on Feb 11, 2020 7:23:07 GMT
The good news... Finally found the problem! There's a faulty connector at the base of the steering column in a really awkward to reach spot
The bad news... I've disturbed all manner of problems that are even more difficult to reach
Ho hum
Does anyone know if it's possible to remove the the metal frame below the parcel shelf to reach all that gubbins?
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Post by Phil Nottingham on Feb 11, 2020 7:41:20 GMT
Thanks for the update and no the parcel shelf frame is welded to the bodywork bur does have access holes under the trim panels
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Post by vetanari on Feb 11, 2020 9:58:06 GMT
Thanks for all the advice I'm certainly getting to know the car now!  |
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