Indicators

[raff_gta]

Hey guys how are we?

At this current point in time, me and my mate are rewiring up my Dad's 105.

It has a bit of history behind it, most of which is unknown to us even though he has owned it since it was about 6 months old. As it seems, its a 1600 GT Junior (1972) with 2 litre exterior, but as for the interior, it was the Junior dash, with the 1750 console... Weird!

Anyway, we've decided to custom wire it to an extent, especially to save the headlight and indicator stalk, buy running a dual headlight relay, and using the switches as grounds to activate the headlights, meaning 12v will flow through the relay and not the stalk.

One of my problems is I am a bit confused as what to do with the repeaters/indicators? In standard form, it seems that with the flasher control relay, power will flow through the stalk which is not what I want to do (although if its the way it has to be, then so be it). Does anyone know of a relay that I could use in the same fashion as the headlight one?

[Alfacliff]

if you wire the relays so that the common is on ground, you can use the light switches as origionally wired, 12 volts comes out of the switch to turn on the relay. this means a lot less current for the switch than turning on the lights direct, thus saving the switch contacts.
cliff

[papajam]

Quote:

Originally Posted by raff_gta ...and using the switches as grounds to activate the headlights, meaning 12v will flow through the relay and not the stalk.

[raff_gta]

if you could that would be fantastic, sorry to be such a pain in the ***

[Alex]

Interesting thoughts about the indicators. I have made extra earth connections for all the individual external lights, but in this case my instinct tells me that you'd somehow have to figure out a way of insulating all the lights from the body in order to complete the ground circuit at the column switch? I'm only thinking that because I once refitted the side indicators and they stubbornly refused to work until they had a better earth. Electrics are my weak point, so this will be a good thread to follow .

Alex.

[papajam]

My understanding Alex is that raff wants to change all power circuits in the column wiring to earth circuits, not switch each bulb with an earth circuit. Is this correct raff?

I'll start working up some diagrams with the assumption that all the wiring in the column will be earths.

BTW raff, what year/model Alfa are we talking?

[raff_gta]

Its a 105 1972 GT Junior, but with two litre headlights and tailights. yes, the column switch should be all earths.

the headlights have been sorted, its just the indicators. Also, with regards to the tailights, what should I do there?

[papajam]

Nothing needs to be changed at the taillights.

As the attached diagram shows, the only changes to the original wiring are the addition of two relays and the turn signal switch wires becoming earths.

[raff_gta]

absolutely fantastic! thank you very much! As for the relays to use, a standard horn relay would do the trick yeah?

[papajam]

Yes, any four terminal relay will work as well as a three terminal horn relay. If you're going to use a three terminal, or a four terminal that has different terminal designation numbers, please post the specifics so we can figure which wires go on what terminals.

[raff_gta]

ok no worries! thanks a million jim

[raff_gta]

just wired her up, works fantastically! thank you very much, I'll post up some pics and stuff of our progress soon enough

[papajam]

Thanks for the update.

Looking forward to seeing some pics.

[Storm_X]

??????????

[Rich]

What, no update?

Just wonder if this made any difference in timing, adding the relays would add a few milliseconds delay, plus the flasher click plus the relay click, so would that be four click for every flash?

Raf let us know what the outcome is if your still around on the BB, if not I will do bench test myself, unless you know Jim?
Rich