Brake light issues. - The Repair Shed - Electrical Help - Discussion Areas - Honda Trail CT's - Message Board - Yuku

RSS
Email

0 Kudo

<< Previous Topic Next Topic >>

Brake light issues.

Author	Comment
Otis	Brake light issues.	Lead	[-]
Posts: 29 (11/02/09 00:04:29) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	My ct110 (99-05 model) has the tail light globe with a large and small filament. The larger, brighter is stuck on and the other smaller won't come on at all. It's hot and getting black. By the look of it, the brake circuit is open? How does it work? Does the smaller light come on only when the brake is not being used? I think the front switch at the brake lever is broken but not sure. I don't understand where the sensor is on it, looks like something should protrude and touch the lever butt?
1974K5		#1	[-]
Posts: 205 (11/02/09 04:41:22) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I believe that the smaller filament is for the tail light only so won't come on unless the lights are on. As to the larger filament (brake light), sounds like one of your brake switches is stuck. Check both rear and front switches, you need to figure this out as it is using voltage while on all the time plus the bulb will burn out fairly quickly... Good luck. Glenn 1974 CT90 K5 "Mighty 90" NE Washington and Wickenburg, AZ
tomsexpress		#2	[-]
Posts: 257 (11/02/09 05:49:18) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I'm not familiar with the 110 but it should be similar to my 90's in that the bulb has two filaments the smaller of which is for your running light and the larger one is for the brake light. As far as the switch goes, on my 90 the front brake switch has a "tit" that sticks out about a quarter inch. When you pull the front brake lever this allows the "tit" to pop out and close the circuit thus turning on the brake light. Sounds like you have a broken switch. You might try unplugging the switch in the bucket to see if that turns the brake light off. Also, if it looks like there's something broken off on your switch, try using something to depress the switch in and see if that turns the brake light off. Tom
allen pierce		#3	[-]
Posts: 997 (11/02/09 07:59:15) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	1974K5 wrote: I believe that the smaller filament is for the tail light only so won't come on unless the lights are on. And, on a CT110 (in the U.S.) the headlight and taillight are on, all the time, when the engine is running (i.e., no off switch from the factory). Paved roads, just more needless government spending...
Otis		#4	[-]
Posts: 30 (11/02/09 13:58:51) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	OK thanks guys. I will try disconnecting the switches from the wiring harness and see if the light turns off. Still not sure why the running light isn't coming on, as soon as I turn on the key, the main brake light is on. I think I better post some pictures of the front switch to see if it is missing something. *Edit. here is the picture. I'm sure something is missing but i can't remember what it looked like. Last Edited By: Otis 11/02/09 14:34:25. Edited 1 times.
gizmo		#5	[-]
Posts: 101 (11/02/09 15:01:02) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I believe there should be a pin protruding from the round part when the lever is pulled like it is in the picture. When the lever is at rest position it pushes the pin in, breaking the contact and light goes out.
tomsexpress		#6	[-]
Posts: 258 (11/02/09 16:39:15) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I believe gizmo is correct. Interesting, the CT110 setup is external and the CT90 setup is internal, both doing the same job. Tom Here's a picture of the switch I use on my CT90. http://images.cmsnl.com/img/products/35340-437-661-sw-assyfr-stop_big35340102013-01_c7eb.jpg
Otis		#7	[-]
Posts: 36 (11/18/09 01:38:13) Reply Quote More My Recent Posts Message Me Connection Blocking Invite Ignore User's Posts	I have replaced both brake-light switches with new from Honda. Nothing has changed. I checked all the connections and they seem fine, but will have to get into this with the multimeter and lightly sand all connections also. The colors of the wires match correctly. What I suspect is that there are two separate issues; brake-light circuit stuck open and, tail-light circuit closed or broken. Is everything earthed at the rectifier?

<< Previous Topic Next Topic >>

Quick Reply