Convert rear turns to run with stock bulbs

Written by John Cosentini (   
Thursday, 10 June 2004

Convert Turn Signal Lamps
Combination Running/Turn Lamps 

using 1156 Bulbs (Single filament)
By John Cosentini (

Reprinted by Permission from Mr Tidy's Tech Tips

This schematic will allow you to run the stock single filament bulbs in your turn signals as running lamps and turn signals. When you turn on your left indicator the relay is activated and the lamp will go off and on and off.

When the indicator is turned off the relay will return to the Normally Closed position and the lamp will stay on with the power from the running lamp Blue wire. So rather than powering the lamps with the Brown & Green wires, these wires now activate the individual relays. The load with the relays should be fine.

Make sure you change out your rear lens from Amber to Red Lens as in most States, if not all, it is illegal to run Amber running lights.

You should be able to obtain 2 12volt single pole, double throw miniature relays at Radio Shack, Preferable you will want @ 2 amp current rating to handle the current drawn by the Lamps.

A logical placement of the relays would be under your seat or under one of the bike side covers.  The rear lamp wiring enters the fender beneath the seat.

Questions should be asked in our forum (Use discuss link below). The forum is very active and you stand a good chance of getting your questions answered there. If you would like to leave feedback for the author, or have additional information you think will benefit others, please use the comment section at the bottom of this page.

Discuss this article on the forums. (2 posts)

DISCLAIMER: This information and procedure is provided as a courtesy and is for informational purposes only.  Neither the publishers nor the authors accept any responsibility for the accuracy, applicability, or suitability of this procedure.  You assume all risks associated with the use of this information.  NEITHER THE PUBLISHERs NOR THE AUTHORs SHALL IN ANY EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, PUNITIVE, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, OF ANY NATURE ARISING OUT OF OR IN ANY WAY CONNECTED WITH THE USE OR MISUSE OF THIS INFORMATION OR LACK OF INFORMATION.  Any type of modification or service work on your motorcycle should always be performed by a professional mechanic. If performed incorrectly, this procedure may endanger the safety of you and others on your motorcycle and possibly invalidate your manufacturer’s warranty.

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  Comments (2)
This is one mod that is going on my bike
Written by ahamay, on 04-27-2010 10:39
Just looking at the simplicity of this circuit has me impressed. Genius who ever did this.
now im confused
Written by hrdbrgn, on 08-01-2009 15:12
Hey guys...need some help. I went to radio shack to get the relays. all they had was the 1 amp and the 10 amp relay. Guy told me i could use the 10 amp as long as it didnt call for a higher amp relay. Wouldnt that make the blinkers flash in slow motion? And would it have any affect on the battery? Electrical systems arent my forte so im dumb as a rock in that arena but CAN follow instructions. Also the article doesnt mention anything about the sockets for the relays. I would need them too or do you just solder the wires directly to the relay? Any help would be appreciated. I really want to get those running lights working. Thank a bunch. 
Nick :?

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