Some electrics not working help

Hello guys need some help, some of the electrics in my car  are not working, my wipers are not working or heater or the gauges In the centre console and the rear demister, I have cleaned the earth crown and the fuse holders also I have run a live feed to the wiper motor via battery and that turns ok, i have a flashing alarm light which usually goes off when the ignition is on but that is flashing any idea what I can  look in to also can I do anything with the relays to see if the wipers work if i bridge any pins all help is appriciated in advance. I habe the earlier style fuse box car is a 1982 tin top 1600

Also I have no horn

first suspect is the ignition switch or the fusible link on the battery wire…

second would be the load reduction relay as all the above are tied into it….

Horn only works with key in and switched on….
That is why I suspect the ignition switch first.

So the ignition switch could be the culprit, also the relay that is in the left of the fuel bypass relay when removed to clean the pronvs there is a rattle inside the relay is this relay the load reduction relay ? The fuse board was a little wet so I did remove the relays and connections ans dried them out also is there any way to bridge the load reduction relay to if it's the cause

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Relays that are good usually don't rattle.

Great write up of the "X" circuit or load reduction system.

The "X" Circuit from the Ignition Switch. | VW Vortex - Volkswagen Forum

I would say that water migration in the relay could be the cause…..

Electrical System


Inside the fuse panel…..

I see I will get a relay and see if it helps I did dry it out but you never know, is there anyway to test if it could be the load reduction relay and also is the location of the load reduction relay as I have described thanks Briano  

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Click on the links,



And
The "X" Circuit from the Ignition Switch. | VW Vortex - Volkswagen Forum

Has the pin outs of the relay…..

PS fix the water leak... or you will have additional issues as well.

Will do Briano just been parked up and not  used in months, it used to be my daily and everything was good since parked up it's just been having so many issues

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Hello Briano just bridged pin 30 ans 87 of the load protection relay and everything worked so a new relay is being ordered thanks again for the help and info Briano and happy New year

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Also could I use a standard 4 pin 12v 40amp relay or is there something special about this load protection relay ( the one I have taken out is 12v 40amp)  thanks

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Yes a 53 relay should work, as long as it is 40A.

A heavy duty relay for fog lights used at the addition of rug lights on the bumper as long as it too is 40A and usually available at your Auto Parts Store should work as well.

Thanks Briano so a 12v 40amp 4 pin relay should be ok to use I just can't understand the relay diagram on the side

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That's the diagram on the side so was wondering what sort of diagram is it or do all 12v 40a 4 pin relays be same thanks In advance juat want to make sure I get the right thing

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I must admit I thought I knew which blade (85, 86, 87 & 30) did what.

But after googling to confirm I seem to have found two different ways of wiring it up.

So I'm going to keep quiet and see what the Master of the Power has to say.  

Ian

if your headlights work, the ignition switch is good

the 'classic' way to wire a bosch type relay is like so:
30 - main power input
85 - earth trigger
86 - live trigger
87 - main power output

but 30 and 87 can be wired either way round, as can 85 and 86. indeed you can see them wired both ways in VWs,  but the 1st example is the way it is 90% of the time

Anyway, the x-relay for the ceramic fusebox is the same as an aftermarket 4 terminal relay, VW equivalent is the classic '53', replacements from newer VW are 204, 373, 643 and 645. Part numbers are 431951253H, 141951253B, 8D0951253A, 8K0951253, and 4H0951253A.

The dealer will sell you one for 16.24+VAT, or just go on a scrappy hunt

Thanks Johnny have ordered a 12v 40a relay matched the numbers on the pins so hopefully it should be ok will keep you up dated still waiting on my delivery man lol

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