brake light not coming on - wiring schematic needed

**jid** · October 14, 2013, 08:42 PM

Does anyone happen to have a wiring schematic for the A2? Over the weekend i learned by brake lights aren't coming on when i hit the pedal. I would love to trace out the wires but thought i'd start here first. some of you have forgotten more about the A2 than i'll ever learn... just hoping this isn't in that category of things that have been forgotten!

J

**bolus** · October 14, 2013, 08:57 PM

Probably need a new brake light sensor. the cable with the red end on attached to the master cylinder under the dash. Ill search for a part number. I believe you need to bleed the brakes to replace it

This thing:

**Positron** · October 14, 2013, 09:41 PM

Brakes? they only slow you down.. and ruin your track times..

Pretty common failure.

I never could find the short one but, some trimming required. Don't forget the washers and carry one for spare.
https://www.pegasusautoracing.com/pr...asp?RecID=5028

**DarthChicken** · October 14, 2013, 10:21 PM

jid, unplug the connector that plugs into the sensor shown in the above post and short the two wires together with a jumper wire. I bet the brake lights turn on.

I know the bulbes aren't loose, I hardwired in some LEDs.

**jid** · October 15, 2013, 06:29 AM

Aha! I'll give it a try! Is there an in-line fuse somewhere in there for the LEDs also? Just curious. Can always order a replacement part but i do hope it is a simple fix!

Originally Posted by DarthChicken

jid, unplug the connector that plugs into the sensor shown in the above post and short the two wires together with a jumper wire. I bet the brake lights turn on.

I know the bulbes aren't loose, I hardwired in some LEDs.

**DarthChicken** · October 15, 2013, 06:37 AM

no inline fuse that I put in.

**jid** · October 15, 2013, 08:16 AM

Originally Posted by DarthChicken

no inline fuse that I put in.

Cool. So the wires are hot and ground? Is that how the two wires work?

**bolus** · October 15, 2013, 08:28 AM

There is a fuse for the brake light in the first fuse box. That would be the best to check first

**FrankRizzo** · October 15, 2013, 09:57 AM

I got it!

Should you have this issue, and want the part, it's a "Goodridge BL Banjo Bolt 3/8-24 Zinc". Part # 03-6036.

And BEST of all, should you be on the road somewhere and have one fail, you can get them at your local Harley Davidson dealer.

**DarthChicken** · October 15, 2013, 11:17 AM

The switch is just closing the circuit, its not a ground. So its either all hot or all ground, I'm not sure. Which is why I said jumper, and not ground