SOHC.co.uk Forums > CB750

Electrical ?

(1/3) > >>

Greebo:
Hi guys

I only use my bike during in the day & i don't run my bike with the lights, but the other day I decided to check all the electrics [as they do in an MOT] I noticed that when the engine is not running if I switch the head lights on & the indicators at the same time the indicators don't blink, it also does the same on tick-over but if the Rev the engine they all work OK...this I think is obviously a charging issue ?, the battery is a new Motobatt & is always on a Optimate Charger if stood for long periods...is the regulator knackered ?
if it is the regulator where can I get one ?

hairygit:
Probably NOT the regulator, as revving the engine makes the problem stop. Do you use electric start? If you do, and it starts okay, you need to be checking connections and earths to the affected items (lights/indicators), though my guess will be wiring/earth to the headlight, as you don't routinely use it, dirt or corrosion can start in the connections and you wont notice it.   

Greebo:

--- Quote from: hairygit on October 18, 2017, 10:25:47 AM ---Probably NOT the regulator, as revving the engine makes the problem stop. Do you use electric start? If you do, and it starts okay, you need to be checking connections and earths to the affected items (lights/indicators), though my guess will be wiring/earth to the headlight, as you don't routinely use it, dirt or corrosion can start in the connections and you wont notice it.

--- End quote ---

Thanks for the quick reply !
it does start up no problem usually 1st push of the button & the motor really spins-up... I will check the headlight connections... Thanks again

hairygit:
Check all the earths in the headlight shell as well, as being plastic dodgy earth's cause all sorts of irritating issues, if there is an earth tag on one of the large headlight bolts, check, clean and apply a smear of Vaseline to prevent corrosion forming again. Any corrosion/dirt increases electrical resistance, the most likely cause of problems.

Sent from my X6pro using Tapatalk

K2-K6:
Just to add to Harygit's good advice,  sometimes when you get the earth compromised the current tracks through other bulbs to make circuit.

You see some older cars that when they brake and indicate at the same time all of the light cluster pulses together,  which is illustrative of this. If you turn on the headlight without engine running then you may see some other lights like the indicators glowing if you looking carefully. This can help push you in which direction to look.

Navigation

[0] Message Index

[#] Next page