Marker lights failed both sides

Hi MM, 

No, don't believe your lazy, probably short on available time at the time, sounds familiar to me! When you say; "He drilled my car to fit his earth" sounds like he butchered your car to fit his earth lol. Many thanks for answering my question, the reason
I asked is that I have read somewhere reasently that Landrover, Audi and Mercedes on some of their newer models have a factory connection to operate a standard automotive relay (engine running only) to supply caravan fridge via ECU control. I do know some
of the latest Landrovers do but I'm unable to find out at present if it's true of the other two makes.

Colin

Mine's a 07 reg, so from an electrickery point of view is from the Ark by now. 

Yes, it was a time thing at the time. I went back to tell him what I thought of him. He stood by what he'd done so that he could have his work stand alone from the car's own loom, but ''the screw was stainless' ... quite what that's got to do with it when
the car's plain old mild steel. He'd done various bits of work for me over the years ... water heater repair in my last caravan and a few towbars
supplied &/or fitted over the years, but as I told him, he'll never get any repeat buisness.

Hi MM, 

Just a quick thought that springs to my mind without me thinking any deeper, as you well know, LED Lamps (especially low lux ones used for side & side marker lights) take very little current (mill-amps) and as a result of this problems like you have mentioned can happen where they don't happen to normal bulbs as they require larger operating current. The first thing I suspect is water in the 12N/12S or 13 euro plugs.

Colin

I'll take the plug apart & inspect/blast it with silicon spray. I doubt it'll be the socket as it's packed with silicon grease .... I noted last year when I swivelled it down after a few months of not using it (detachable bar & hidden electrics), that a
whole load of water dripped out of a drain hole (pity the water wouldn't fall UP when the socket was not being used ) It'll be next week now
as I'm back in work tomorrow till Tues

Thanks for your wise thoughts 

When I had my tow bar fitted the fitter explained that the cables connect to the main fuse array but there are relays hidden in the boot lining etc. In one of the small bulb access points
in the boot of my car are 3 additional fuses for the tow electrics. One is for the charger/fridge and the other two are a lower Ampage for the van lights. Might be worth taking a look to see if you have anything similar.

I know where the VSR is, as you say it's in the 'boot' area ie in where the spare lives, not really looked to see what else he did (other than needlessly drill) . I'll electricaly clean it all up & see what happens. Thanks 

Hi MM, 

Last night you mentioned within one of your posts within my discussion titled "One in a million electrical faults" that your towcar has a common feed wire system for operation of the cars stop and tail lights, I.e. It uses a single filament 12v/21w bulb
for stop/tail and not a standard 12v 5/21w bulb. Now that you have mentioned this, this could be a big giveaway to said problem, if you could let me know how you get on, if no luck I will give you a few more tips to check. Just as a matter of interest, if
I was to say to you that it could be the towcars stoplight switch at fault, you will probably think I'm off my trolley, but I can assure you I'm not. Incidently, if your car has cruse-control the stoplight switch will have four Connection terminals.

Colin.

My car does indeed use a single 21W lamp for both stop & tail. As I have just got home from work I'll pass on looking tonight   .... my car
does have cruise, but have never ventured my head under the steering column to look at the brake light switch. I'd assume you are correct re the connections to it as I know my last car was as you say ie a N/O & a N/C pair of contacts.

Whether this has any bearing on it but ...... when I leave the AUTO lights in the AUTO position when I park at services etc with the caravan still connected, I've noticed that the lights stay ON on the caravan  until
I turn the car's light switch to OFF (that was the same with my previous Lunar too)

Hi MM, the caravan lights staying on until the main switch is in the off position appears to be normal in my opinion.

Even though the ignition & car's lights were OFF