Electric fuel pump on a 77

[leggman]

I have a 77 that I am installing a 1200 fuel pump on and I was wondering where would be the best place to tap into the electrics for the fuse and wiring to the pump.
On my 79 I came off the accessory terminal but the 77 does not have one.
Thanks. Dave

[CYBORG]

I have a 77 that I am installing a 1200 fuel pump on and I was wondering where would be the best place to tap into the electrics for the fuse and wiring to the pump.
On my 79 I came off the accessory terminal but the 77 does not have one.
Thanks. Dave

I would wire it thru a relay direct to any circuit that is hot when the key is on. Some members wire in a tip over sw, so that it will stop pumping in the case of a tip over. I only use the relay .

[BlueThunder]

Better yet... wire the relay power into the run-stop switch. This way if the switch is set to stop, the pump won't run.

[CYBORG]

Don't see the advantage to that, but it would work if you use a relay.

[leggman]

That would be an easy way to disable the pum during maintenance. Makes sense. Or a small toggle switch under the shelter half.

[CYBORG]

The pump only pumps until the carbs are full. If the bike is not running it will shut down till the carbs need fuel

[Sidecar Bob]

Unless the bike is on its side and gas is pouring out of the carbs....

FWIW, I considered an electric pump and even experimented with a vacuum pump but in the end I rebuilt the mechanical one.

[CYBORG]

Unless the bike is on its side and gas is pouring out of the carbs....

FWIW, I considered an electric pump and even experimented with a vacuum pump but in the end I rebuilt the mechanical one.

If the bike is on its side, especially a side car rig, you have a few other problems But I under stand your concern. if its a concern, install a tip over switch to shut it off,...or even a fire suppression system. I just like to live on the edge, and that is just one other thing to go wrong

[Sidecar Bob]

Yeah. I guess it wouldn't be much worse than a gravity feed petcock.

BTW: I experimented with the pump before I got the sidecar for the 'Wing.

[leggman]

I wired in the electric pump today but I still don't have a battery for the bike yet so I was unable to check it. I used the black/white wire going to the coils as my switching/coil wire for the relay and used an inline auto blade type fuse of 20 amps going straight from the battery to the pump through the relay of course. I ran a heavy ground wire from the battery to one of the mounting bolts for the regulator and the relay ground and the pump ground tie in there. I need to get a battery but I don't want to get fleeced in the process.

[OCR]

Easy test, do you have a set of jumper cables?
Hook up to car/truck/riding mower and see it it works as intended.