TourGlide wiring fun
Cruiser
Joined: Feb 2014
Posts: 129
Likes: 11
From: NPR, FL
I know everyone says its common but I have a similar issue on my 94FLH. Voltage gauge drops to 10v every time I hit the brakes. The head light also dims. I noticed over the weekend that when I had my wideband gauge plugged into my cig lighter socket, my turn signals would not come on and blink properly.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
I recommend starting with Tom's suggestion above. Most electrical 'problems' of this type are not electrical but mechanical. The simple act of applying a brake and getting a voltage reduction is most likely down to dirty/oily/loose/corroded contacts. There aren't many such candidates in brake light wiring! Clean, tighten and apply a little dialectric grease. Check every ground, by disconnecting it, cleaning etc. Pull apart multi-pin connectors, carefully, and ditto. This is little different to spring cleaning around the house and dusting the tops of those tall items of furniture! There is bound to be a eureka moment along the way.....
Stellar HDF Member
Joined: Jul 2011
Posts: 2,583
Likes: 115
From: Boston, MA
I recommend starting with Tom's suggestion above. Most electrical 'problems' of this type are not electrical but mechanical. The simple act of applying a brake and getting a voltage reduction is most likely down to dirty/oily/loose/corroded contacts. There aren't many such candidates in brake light wiring! Clean, tighten and apply a little dialectric grease. Check every ground, by disconnecting it, cleaning etc. Pull apart multi-pin connectors, carefully, and ditto. This is little different to spring cleaning around the house and dusting the tops of those tall items of furniture! There is bound to be a eureka moment along the way.....
Last edited by Tee⋁ Nov 30, 2018 at 10:16 PM.
Banned
Joined: May 2018
Posts: 4,576
Likes: 978
From: Viet Vet, crossroads
Yes, - and when everyone discovers power actually comes out of the negative terminal
Page one can be turned.
The Brits are the only one that got the ground plane correct. in cars. (Neg ground)
Page one can be turned.
The Brits are the only one that got the ground plane correct. in cars. (Neg ground)
Road Warrior
Joined: Apr 2016
Posts: 1,528
Likes: 933
From: Long Island
I've had similar problems on my 86.I found weak connections at the mylox connectors. I ended up making solid connections.Keep in mind the anti-dive solenoid valve draws a bit when hitting the brakes.
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