Topic: Electrical Question

[Vintageguy]

1978 750F. Want to change out my rear directional signals with better ones. Question is; The existing units have 2 wires as opposed to only one, and they are both plugged in under seat. Do I not need both wires in order for the new units (with only 1 wire) to work properly? Thanks for any/all responses.

[69cb750]

One wire 12 volts, one wire ground, you need both.

[Vintageguy]

Why is it, then, that my replacement units came with only one wire? Thanks

[Scootch]

One wire for running lights and one for turn signals? Gnd supplied by the frame.

[grcamna2]

The mounts are grounded to the frame which needs a good(green)ground wire to the main wiring harness;have you checked the factory Honda green ground wire on your main harness and verified it has a metal-to-metal connection to your frame ?
They sometimes don't because the frame paint interrupts the ground connection.

[bryanj]

F2 were rubber mounted and needed the seperate ground wire, aftermarket didnt fit the ground wire and left it to the owner to sort out