Hi guys i am having problems with the fuses on my 300zx,The problems i am having are the indicators wont work only when i use the hazards(the relay is clicking) they do but on the guage cluster the left arrow only lights up,also my power windows wont work also my hicas light is on,i have checked for power in the fuese but 5 hilighted in the pic there is no power to them,anyone else have this problem or might know what might be wrong?Thanks all

 

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https://ibb.co/kZp9GJ

You have got your ignition key in and turned to the accessory position? The diagrams in the attachment

show the power supply routing to make things clearer. Some circuits work all the time (hazards for example)

others require the key in and turned to work (for example windows and indicators operated by the stalk).

 

el-10-11.pdf

Hi andrewG yes i do have the key on to accessory position,Havent a clue what the problem might be,they were a working fine the last time i drove it,around 6 months ago

Have you checked the ignition relay (see diagram I posted above)? It supplies power to the Windows, Turn and HiCAS

circuits.

 

The ignition relay is located on the fuse/junction block behind the drivers footwell panel - see attachment:

 

FOLDOUT.pdf

 

You should also check for water damage to the fuse/junction block (from a split or disconnected targa drain pipe) which

is a common source of electrical problems in that area.

Edited May 18, 20187 yr by AndrewG

Thanks mate i will check that relay and let ya know.Cheers

Btw where is that relay,Is it behind the fuse block?

Yeah rear of the fuse box. It’s actually not that bad to remove. Get the accelerator pedal and bonnet realise out the way, the rest is just plugs. Don’t make my mistake, two are the same and if you mix them it’s problems.

Hi guys i am having problems with the fuses on my 300zx,The problems i am having are the indicators wont work only when i use the hazards(the relay is clicking) they do but on the guage cluster the left arrow only lights up

 

It does sound like your hazard switch is not disengaging fully, check the switch mountings in the pod, my guess it's not seated correctly and is fouling on the opening.

Hi guys I checked the relays and for sure yous were right,the rear of the fuse box was very wet,the only thing is that 2 relays seems to be not working ,blower and ignition,can these be fixed or where is the best place to buy them,thanks lads

Have you checked the targa drain above? That’s probably where the water got in. The 20a blue ones are in mk2 micras the brown ones I’m not sure.

No mate I haven't,were abouts is the the targa drain btw?

Also should I remove the fuse box completely from the car and dry it out?

Probably a good idea. The drain is about the fuse box, quite well hidden have a poke about. Corse the relays you need, there’s identical ones in the engine bay box,you’d be robbing Peter to pay Paul but they’re much easier to access later.

The pipe runs down the inner window pillar & out by a rubber u type pipe by the front wing.

Over time the pipe shrinks & comes adrift of the u pipe by the inner wing!

I had to do the passenger side last year & it's a pig!

Jeff has done a thread on it some time ago.