Indicator Relays

Discuss all things 1970 & later Airheads right here.
Post Reply
Nourish
Posts: 194
Joined: Tue Aug 10, 2010 5:15 am
Location: Bristol, UK

Indicator Relays

Post by Nourish »

My 1989 RT has two indicator relays and I gather that one would of been for the hazard warning lights(?) that have now been removed. The problem is that whilst trying to remove what's not needed and I remove either one relay the indicators won't work, How can I remove one relay or better still could I replace one with a buzzer relay as I'm always leaving the indicators on!
Cheers
User avatar
gspd
Posts: 1041
Joined: Tue Aug 03, 2010 8:04 pm

Re: Indicator Relays

Post by gspd »

For an audible flasher reminder, install a 12V buzzer, one wire to the left flasher hot lead, another to the right flasher hot lead.

For a simple turn signal system, find the green/yellow flasher relay wire and connect it to any 12V two terminal flasher relay. Connect the other terminal to any wire that has power with the key ON. Tape up any remaining wires. Everything will work as well (or better than ) OE.

For a simple 4 way flasher system, install a toggle switch between the left and right flasher hot leads,
the 4 ways will work when that switch is ON and you activate either flasher.
Note: If you only have one dash indicator light for both left and right signals, the dash indicator will not work when the 4-ways are on with this setup, so you could ride away and forget they're ON.
(some models have separate left and right dash indicators so they will both flash with the 4-ways on.)
The above mentioned buzzer won't work when the 4 ways are ON.

I converted mine to separate L & R LEDs to alleviate this issue, and for added bling.
Image

One advantage of the OE 4-way system is that it can not be turned on without the key, but once it's on, you can remove the key and it will stay on. This could be practical if you want to go for help and leave the emergency flashers on but not leave the key in the bike. For simplicity and practicality, my flashers and 4-ways are wired to work without the key, on a separate circuit with its own dedicated 'flasher only' fuse. It hasn't been a problem for me so far.

EDIT: Electronic flasher units will not go faster to warn of a burnt out bulb.
A lot of mechanical ones (not all) will flash fast with less than a 20W (1 bulb) draw and flash normal speed with a 40W + draw (2 blubs or more ).
Mechanic from Hell
"I remember every raging second of it...
My bike was on fire, the road was on fire, and I was on fire.
It was the best ride ever!"
Post Reply