Modern Vespa

Alarm connector.

On the left side - you can see the copper wire coming out

I don't think there's an alarm connector on ET4's

that *appears* to be the pigtail for the ECU

The pigtail is unplugged because i was going to test it, but i am also confused on that aspect.

confused in what way?

I don't have spark. Scooter doesn't start. It's 2002 et4. I tested the ignition coil and it has resistance.

have you tested the pick up at the stator?

the FSM has the instructions.

seeing the patched together headlight relay, what else has been hacked up in the wiring harness?

have you tested the pick up at the stator?

the FSM has the instructions.

seeing the patched together headlight relay, what else has been hacked up in the wiring harness?

the pick up at the stator? am i checking resistance? I can't start it so i don't know whether you meant pick up as in started. the service manual says .7-.9 ohms value after disconnecting the voltage regulator connector and check for continutity between each yellow wire and the other two

yeah, the pick up at the stator. there's a resistance and ohm spec. it's done at the connection to the harness not up at the voltage regulator, that continuity test is only for the voltage side of the stator. the procedure is in the FSM.

Howdy, so here's what i did.
I got to the plug of the stator. I found the manual - attached are photos of the stator testing.

I have continuity for 5-3 and 5-1. both make sounds with multimetere.
I have no continuity between 5,3,1 and chassis. i'm guessing that's what good isolation means?
i tested oil low pressure warning sender and 4 and 1 have continuity.

I'm a little confused on the minimum resistance 740+-10 ohms. what's that suppose to mean

those tests are for the electrical output of the stator, not the ignition portion.

you need to test the pick up: #2 and ground- resistance 105~124 ohms

I'm assuming that you've worked the tree and done the other prescribed tests on the HT coil, cap and wiring for that as well as the ECU?

those tests are for the electrical output of the stator, not the ignition portion.

you need to test the pick up: #2 and ground- resistance 105~124 ohms

I'm assuming that you've worked the tree and done the other prescribed tests on the HT coil, cap and wiring for that as well as the ECU?

I got 120 ohms between #2. I checked HT (ignition coil from google search) and it says 3000+- 300 on manual.
i measured it and i found 3.58 resistance ohms at 20k (meaning 3580 ohms) between either end whether green or black to the connection between the wire and both green and black outlets. i don't know if that's good or bad to be honest.

i also looked at manual and it said to renew the high voltage cable if within specs of .4-.5. i got .5 going from the 2 ends. does renew mean get new? confusion i attached a photo to see.

I do not believe it is the HT because it's above the range of reistance. It wasn't showing anything last night for some reason - it did change in temperature from 60 to 85 degrees.