So I’ve had my XJS for almost two weeks now and I’ve been itching to hear her purr. She had been put away about 12 years ago in dry storage and hadn’t been messed with since. I checked all the wires hoses and such for any issues and find very few. I drained the fuel and replaced with new high grade. Today I finally hooked up a battery and tested the fuel pump (with the hose disconnected and draining into a bucket). Once I was confident everything g was good I hooked everything g up and videoed as my wife started her. She cranked for a second then fired right up. Took a minute but she settled into a nice idle. After going over everything g again I even took her down the road.

She he sounds great, a little creaky and the flat spots on the tires make for a funny ride but she’s got some giddy up.

Now one the fun parts. Going to change all the filters and fluids and most of the hoses ( breaks and fuel) this thing was so well taken care of that nothing looks like it NEEDS to be looked after.

I did did find that the radio, antenna and window won’t seem to work. Having fun trying to figure out what fuse panel these items would be hooked to. Any suggestions would be great.
After some of the electrical is sorted I need to fix a small home in the drivers seat and get the headliner done.

Been interesting so far.

I tried to to upload some video but I can’t seem to get it to work

 

Hello 84

Fuse for the electric aerial is number 3 in the main fuse box below the instrument cluster (above your knee). This is also for your interior lights, so if they work - it is not fuse related.

Not exactly sure which fuse controls the electric window (doesn't say in my book).

Relay for the window can be found behind the glove box. Very easy to access when the dash fascia is removed

The round relay

Cheers
Steve

 

No fuse for the windows but you should have a circuit breaker and, as mentioned, the relay. I've included a pic so you'll know what to look for. You might have two---one being for power locks

If you have a test light or meter it is an easy circuit to diagnose. We can help.

The S57 Wiring guide is essential. do you have it?

Dirty, corroded connections are a very common problem. Same for the contacts inside the switches themselves.

Often you don't have to replace anything at all




Cheers
DD

 

Bez, in your picture, the items marker 'circuit breaker' are actually the "Bulb Failure Units"

Cheers
DD

 

Thank you for the advice
I did check the fuse and found it to be fine. The interior lights do work so I figured it would be ok. I’ll have to check under the dash for the relay. There was a rodent issue in the engine compartment although I haven’t found any eaten wires. I’m afraid they did some damage under the dash. I finally have a day off tomorrow and will look a bit closer.

 

I do not have the s57 wiring guide so I’ll have to track one down. Tomorrow when I get into the dash I’ll check the relay and circuit breaker, clean them and hopefully be good. Any advice on the radio and the mpg computer. Neither are turning on?

 

Thanks Doug.

Appears that my car does not have circuit breakers. Been going through and checking and cleaning and marking up components (or what I think they are) as I go. So when I forget in the future, I can just go through my photo's

My book indicates that there should be circuit breakers in this area - and since I have not read about the bulb failure units - just presumed.

But it is a big book, and I probably just haven't got to that section yet

(sorry to high jack the thread a bit)

Cheers
Steve

 

I am trying to test the circuit breakers and , honestly, have no idea what I’m doing. I assume I need to check for continuity and if I have it they are good?

Im not very familiar with a multimeter so I’m learning that too.

 

My relay is very different from the one in your pic.
Says “mr Leeds” on it

edit— I just found that the US cars have the window relay mounted on the rear of this plate. I haven’t looked to see what the other round thing is yet.
I looked up how to test it so I’ll be doing that soon

 

Had another look today to find the circuit breakers.

Took the panel off this time and there they were hiding from me, so thank you Doug and 84.

Looks like they did do some improvements over the years, nothing on the back of my 1980 Australian.

Cheers
Steve

 

Today I found that the inline fuse for the radio located in the center console was blown. I replaced it and now the radio will turn on but every few seconds it shuts off and you hear a click. It sounds like a circuit breaker is tripping. Any suggestions?


Also, I changed the window relay and now I can hear it click when I try to use the window switch. I was then able to see that the power is getting to the window motor but it’s not working. I also tried the mechanism and found it not frozen. I believe this means the motor is bad somehow. Looking for new ones. Any suggestions? Maybe a rebuild? I did call around and found two but they are very expensive. Any help with this will be very appreciated

 

As others have said, clean the connects, and check them to be sure they are attached well. I replaced many a connector and that helped in many case. as for the window, is the door panel off ( I assume you have removed it) and I assume you checked the connections at the motor and cleaned them. If motor or other parts are needed, you can always check Ebay, I have found many good parts from there, and don't forget, you can replace some other years, I have also found some parts from the XJ6 work.

 

I installed a new relay, but I had removed the old one and marked the wires but don’t believe I marked them well enough and now I think I am placing them in the wrong place. Can someone let me know what colors along on which posts. I have two brown with blue stripe wires one white and one black. The black appears to be a ground

 

Hello 84

The best I can do is
85 is black for earth
86 is white brown on mine
30 is brown blue
87 is brown blue

Numbers are written near the terminal on the relay

Cheers
Steve

 

Thank you , that’s a big help

now, I found that one of my circuit breakers does not have continuity. If I understand this correctly it means that it no longer works. Does anyone know what amps these are? And where I might find them for sale? I have tried lots of places and am unable to find the exact circuit breaker. Are used a 30 amp fuse to replace it and it blew right when I hit the window button. I’m thinking there must be a short because 30 amps seems like it should be enough




[QUOTE=Bez74;2085164]Hello 84

The best I can do is
85 is black for earth
86 is white brown on mine
30 is brown blue
87 is brown blue

Numbers are written near the terminal on the relay

Cheers
Steve[/QUOTE

 

You can get the circuit breaker from a Jag specialist but it's an oddball; no need to search for one (nor pay the crazy price when you find one). A fuse or generic breaker is fine. And 30 amp should be fine.

The fact that the fuse blows right away when you hit the switch suggests the problem is downstream of the switch. Either a short, as you say, or the motor is faulty and drawing excessive current. Or....the window is jammed and the motor is drawing excessive current trying to move it.

Remove the door trim and unplug the wiring from the window motor.

If the fuse still blows, then you have a wiring problem.....and the search begins !

If the fuse doesn't blow, then look for a problem with the motor itself or a jammed window mechanism

Cheers
DD