Headlight wiring and ground on a 1949

[Mr Mach1]

Can someone tell me where these wires go on the terminal board ? The green, blue and white. Also which terminal goes to ground ?

Thanks
Leon

[1950Panhead]

There is a wire from the ignition switch that goes to the terminal board, the wire is hot (6 volt) when the switch is turned to the second position.
The blue, green, white wires should go to the hi/lo switch on the left handlebar. My guess is 6 volt goes to the switch on the white wire and comes back on the blue or green wire based on hi/lo switch position.
Connect the white wire to the wire coming from the ignition switch, check for 6 volt on the blue and green wires as you switch the hi/lo switch. If you don't see 6 volt alternatley on the blue green wires as you move the hi/lo switch my guess is incorrect.
If true above) connect the blue wire and one headlight wire on an unused terminal, connect the green wire and the other headlight wire on another unused terminal.
Jerry

[Mr Mach1]

There is a wire from the ignition switch that goes to the terminal board, the wire is hot (6 volt) when the switch is turned to the second position.
The blue, green, white wires should go to the hi/lo switch on the left handlebar. My guess is 6 volt goes to the switch on the white wire and comes back on the blue or green wire based on hi/lo switch position.
Connect the white wire to the wire coming from the ignition switch, check for 6 volt on the blue and green wires as you switch the hi/lo switch. If you don't see 6 volt alternatley on the blue green wires as you move the hi/lo switch my guess is incorrect.
If true above) connect the blue wire and one headlight wire on an unused terminal, connect the green wire and the other headlight wire on another unused terminal.
Jerry

Thanks Jerry. I'll give it a try tomorrow.

[Mr Mach1]

There is a wire from the ignition switch that goes to the terminal board, the wire is hot (6 volt) when the switch is turned to the second position.
The blue, green, white wires should go to the hi/lo switch on the left handlebar. My guess is 6 volt goes to the switch on the white wire and comes back on the blue or green wire based on hi/lo switch position.
Connect the white wire to the wire coming from the ignition switch, check for 6 volt on the blue and green wires as you switch the hi/lo switch. If you don't see 6 volt alternatley on the blue green wires as you move the hi/lo switch my guess is incorrect.
If true above) connect the blue wire and one headlight wire on an unused terminal, connect the green wire and the other headlight wire on another unused terminal.
Jerry

Just realized I didn't mention that those three wires are coming from the dimmer switch.

[58flh]

Leon!---if your machine is wired according to stock-diagrams then just sit with a blown-up pic. & good battery.-Volt meter & trace away!---1950pans wiring sounds close like the dia. I looked at!---NOW for the GROUND!--it will be obvious as it will most likely go to a terminal that also holds the board on the bike!-(screw thru terminal-board & into a steel frame tab--will be neg.).Also run more then 1-ground!--a black cable your main ,-& then another from batt. to a hidden spot on the frame!.--Its a GOOD thing to have!---(I run 3-grounds & you cant see any of them ,olny the cable from battery!-2-more from batt. to frontend,& another to frame.---On rigids its a good-thing!,cause they will bounce-loose or if not tended to properly the green color on the ends will eat its way thru in time!---SOLDER ALL YOUR TERMINALS!---Good-luck & shes looking fine ----respectfuly---RICHIE

[awander]

None of the wires from the HI-LO switch should be run to ground.

The way the switch works is as stated above, one wire carries 6V to the switch from the terminal that is hot when the ignition switch is in the "lights on" position. The other wires carry switched 6V from the HI-LO switch to the Lo beam filament, and to the Hi beam filament. You will need a voltmeter or an ohmmeter to figure out which wires from the HI-LO switch are Common, Hi, and LO.

Stock H-D colors for the HI-LO switch wiring were Red/Yel(this means Red with a Yellow tracer) and Blk/Red to the heaadlight, and Red/Blk to the "hot when the ignition switch is in the "lights on" position" Terminal (which should be terminal 9 if wired stock).