Alemaog4T
CB750 New member
Hi everyone!
first post, already asking for your wisdom
My CBX 750 F has arrived home non-running (e.g. on a trailer). With the battery charged, I turned the ignition key and notice two unsettling things:
i. the dash light "tail light" would light it up whenever the clutch is pulled in (e.g. the clutch switch is "closed").
ii. the run-stop switch does NOT kill the start button (e.g. engine cranks regardless if it is in "run" or "stop" position).
Assuming I have an electrical issue somewhere, I started focusing on diagnosing this. So far, I have tested the continuity of the fuse box, and both right and left controls, and everything checks out with the wiring diagram. During these tests, I found out an even funnier issue: with the key in "on", there is not a single light in the bike that works except the neutral and oil dash lights. Now, with the clutch pulled in (and the "tail light" on the dash on), the park, low and high beams work (including the dimmer), as well as the braking lights
. The blinkers sort of work, with a behavior like there is a burned bulk (although all bulbs light up). I have removed the rear relay light box, and nothing changed except that the rear lights stopped working. I have cleaned all connectors, checked for visual damage on the wire harness - so far, nothing obvious explains this... I have studied the wire diagram for hours now, and cannot see an obvious place where wires could cause such behavior, although I know something is not right...
Note that this is my first "full rebuilt" project, and electrics is the place I have least experience/knowledge.
I am sort of lost on what to test next - has anyone had similar experiences, or would have any advice on what to do next?
Thank you all in advance for your help!
first post, already asking for your wisdom
My CBX 750 F has arrived home non-running (e.g. on a trailer). With the battery charged, I turned the ignition key and notice two unsettling things:
i. the dash light "tail light" would light it up whenever the clutch is pulled in (e.g. the clutch switch is "closed").
ii. the run-stop switch does NOT kill the start button (e.g. engine cranks regardless if it is in "run" or "stop" position).
Assuming I have an electrical issue somewhere, I started focusing on diagnosing this. So far, I have tested the continuity of the fuse box, and both right and left controls, and everything checks out with the wiring diagram. During these tests, I found out an even funnier issue: with the key in "on", there is not a single light in the bike that works except the neutral and oil dash lights. Now, with the clutch pulled in (and the "tail light" on the dash on), the park, low and high beams work (including the dimmer), as well as the braking lights
Note that this is my first "full rebuilt" project, and electrics is the place I have least experience/knowledge.
I am sort of lost on what to test next - has anyone had similar experiences, or would have any advice on what to do next?
Thank you all in advance for your help!
