S3 heater blower fan

Quote:

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Originally Posted by debruiser

whats stopping you from changing the fuse and trying it?

From memory isn't there only 4 fuses.

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Hello and thanks.

I had thought of that fairly obvious test, but the truck is in bits and the heater fan and heater box etc are out of it.

In the process of getting active on putting it back together, so happened to be trawling through the workshop manual after dinner. Curiosity got me checking the wiring diagrams to follow through with the heater, wiper and indicators rehabiliation.

The wiring diagram(s) doesn't include the heater fan circuit even though it is standard on the trucks. It also suggests the number of fuses, including free fuses, is eight. Number 6 includes the indicators and wipers as noted in the previous post.

Cheers,

Interesting, I have looked at the 3 manuals I have here and none show the blower fan in them:( Shows me how to pull it apart and put back together, but no mention of a fuse. Just asked HH and we can't think which fuse it uses.

Mrs hh:angel:

Don't forget that quite a lot of stuff in a series vehicle does not go through that fuse box (and yes there are only 4 fuses, may be connectors numbered rather than fuses?). Have a good look at the diagrams and you will see just how much actually gets power straight from the battery with no fuse involved anywhere. I know Lucas has a bad name but I think that actually Landrover at the time had no real idea how to wire a vehicle and it would never have mattered which brand they used :).

Cheers,

TimJ.

Quote:

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Originally Posted by Timj

Don't forget that quite a lot of stuff in a series vehicle does not go through that fuse box (and yes there are only 4 fuses, may be connectors numbered rather than fuses?). Have a good look at the diagrams and you will see just how much actually gets power straight from the battery with no fuse involved anywhere. I know Lucas has a bad name but I think that actually Landrover at the time had no real idea how to wire a vehicle and it would never have mattered which brand they used :).

Cheers,

TimJ.

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Thanks again.

Yes, you are right - there are 4 fuses. The number 6 I mentioned is presumably the end connector of the 3rd fuse.

None of the diagrams (petrol, diesel) in the Series 3 Repair Operation Manual actual show the heater fan/switch circuit. It may or may not be fused (especially to the 3rd fuse), so I am interested to know if anyone else happened to know for sure.

Cheers

I am presently rewiring my SIII lightweight and coincidentally are working on the heater. I can't guarantee that the wiring for a 1980 lightweight and a civilian SIII in Australia will be the same but just in case here is my two bobs worth:

According to the wiring diagram the heater wire doesn't go through the fuse box but directly from the ignition and starter switch to the heater switch with an inline fuse somewhere along the way. However, I have purchased a new wiring loom from Autosparks in the UK and the wiring loom is set up to go through the fuse box. I could however ignore the loom and just put in an inline fuse between the two ends.

The nuetral/orange wire from the ignition goes to terminal 4 of the heater switch. Going toward the heater from terminal 6 on the switch, it is Green and Yellow tracer, and from terminal 8, Green and Brown tracer.

Hope this helps (or not)?