1978 Spitfire wiring

[RonN]

Hi

Does anyone have a wiring diagram for a 1979 Spitfire, my Haynes manual does not match my wiring. The problem I have is no 12 volt supply on the middle fuse so no horn  or anything attached to this fuse. There are two Green/Red wires on the in side  and two red on the other. Has anyone else  had experience of this, or know where the Green/Red wires are fed from.

Thanks

[Steve AKA vitessesteve]

Have a look here http://triumphspitfire.com/wiring.html

[RobPearce]

Are you sure that's the right fuse? The colours don't make sense for the horn circuit. Also, at least some of the Haynes manuals have errors in the wiring diagram relating to which fuse is which.

[Amy Wade]

5 hours ago, RonN said:

Hi

Does anyone have a wiring diagram for a 1979 Spitfire, my Haynes manual does not match my wiring. The problem I have is no 12 volt supply on the middle fuse so no horn  or anything attached to this fuse. There are two Green/Red wires on the in side  and two red on the other. Has anyone else  had experience of this, or know where the Green/Red wires are fed from.

Thanks

This is a scan of the wiring diagram in the owners handbook. 1500 Spitfire Wiring Diagram.pdf

[RonN]

19 hours ago, RobPearce said:

Are you sure that's the right fuse? The colours don't make sense for the horn circuit. Also, at least some of the Haynes manuals have errors in the wiring diagram relating to which fuse is which.

 

[RonN]

Thanks for the reply.

Its definitely the middle fuse thats dead, no power no either side. I have no instrument lights which I guess are fed from the reds. This happened once before and by cleaning all the connectors I thought I  had cured it, once the fuse was live the horns started working. It would appear I have other problems now.

[RonN]

7 hours ago, Wendy Dawes said:

Wiring diagram Spitfire from Triumph workshop manual if this helps 

 

[RonN]

Just now, RonN said:

 

Thanks Wendy I will have a look.

[RonN]

23 hours ago, Steve AKA vitessesteve said:

Have a look here http://triumphspitfire.com/wiring.html

Thanks I will have a look.

[RobPearce]

2 hours ago, RonN said:

Its definitely the middle fuse thats dead, no power no either side.

If there's no power on either side then it's probably not a dead fuse. Dead fuse gives no power out when there is power in. And the fuse with red and red/green wires is for sidelights and panel lights - it has nothing to do with the horn.

2 hours ago, RonN said:

I have no instrument lights

Do you have exterior side lights? If so, it's not the fuse as that would take them all out. It could be a bad contact on one half of the fuse clip (red wire end).

The horn, though, is not fed through that fuse but the one with brown and purple wires.

[RonN]

Hi Rob

 

All sorted bad connection on one of the looms. Cleaned them all to be sure

 

Thanks.

Ron