Indicator / flasher / horn push

Technical advice Q&A

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Heronscourt
Posts: 86
Joined: Thu Jul 09, 2020 4:19 pm
Great Britain

#1 Indicator / flasher / horn push

Post by Heronscourt » Wed Dec 15, 2021 8:20 pm

I’m using the combined indicator / flasher / horn push from the LHD series 1.5 roadster which I’m converting to RHD. I have a new RHD loom set installed and most connections are correct for RHD instruments, switches etc. I’ve connected most of the switch wires to the correct loom attachments but I’m left with a couple of wires from the switch which I can’t find an attachment point. I cant find them ou either a series1.5 wiring diagram or a series 2 diagram. One is a light green with brown stripe which may go to a 4 way snap connector with a bunch at dark green and brown. The other is a brown wire which I assume is a “ live “ but I cant find anywhere to connect it and it’s not on any wiring diagram. It’s obviously due to me using the LHD switch on a RHD car and RHD loom so the question is where do I bring a brown “ live “ from to connect or is the brown redundant and power comes via green from the fuse block.
Any help advice appreciated as I’m struggling with this one
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Alan R
Etype series 1.5 roadster 1968

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lowact
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#2 Re: Indicator / flasher / horn push

Post by lowact » Thu Dec 16, 2021 1:21 am

On S3 it is LGN from the flasher unit to the turn signal switch.
Knowledge base, S1.5 color wiring diag, purple from fuse 8 connects to the headlamp flash switch via a short brown wire into the switch.
Regards,
ColinL
'72 OTS manual V12

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MarekH
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#3 Re: Indicator / flasher / horn push

Post by MarekH » Thu Dec 16, 2021 9:25 pm

You probably ought to make a truth table for all of the possible switch combinations, including any prospect of these connections reaching earth, and then reconcile them against the two basic methods of operating the flashers and green arrow dash indicators. Then layer on the hazard light functionality and the possibility to operate the horn and high beam.

If you have a switch which is different from the model year for your car, then some functions may reconcile to one wiring diagram and some some to another.

kind regards
Marek

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Topic author
Heronscourt
Posts: 86
Joined: Thu Jul 09, 2020 4:19 pm
Great Britain

#4 Re: Indicator / flasher / horn push

Post by Heronscourt » Mon Jan 10, 2022 11:26 pm

Apologies for the late response and thank you. I can now hear the relay click when I turn on the ignition, however the wiring diagram shows a black and purple wire attached to the horn relay and going directly to the horn push. I have this wire connected to the relay but can’t find any sign of it at the horn push / indicator location or anywhere else on the loom. Any ideas gratefully received
Alan R
Etype series 1.5 roadster 1968

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