WD 45 wiring help

Hey guys,
I'm back needing some help yet again. A friend and I spent the afternoon rewiring the WD 45. Installed new wires, key switch, and light switch. All went pretty well, couldn't really test the lights, mine are shot. We only had partial success though. Motor turns over good, it's getting gas, but no spark. The plugs are new, plug wires, points, and distributer are all in good shape. We think the coil may be bad though. My friend is gonna pull the coil off his tractor next week and bring it to test.
The thing we're unsure about is some kind of relay we found in the mix of wires. It's in front of the gas tank, between the headlight mounts. It was held on by one of the bolts holding on the air cleaner. Looks like it was wired down to the coil? I can't remember for sure now. Tried to bypass it with no luck. Anybody know what it is? Or maybe what to do next? I'll put up a picture I tried to get of it. I appologize ahead of time for the poor quality though. That's what happens when you give a blind man a camera.
Thanks,
Brad

That's a resistor you put in the wire going to the coil when you use a 12 volt battery with 6 volt ignition system.

Check with Steve at B&B Custom circuits.
He may recommend to replace coil with correct one and forget the resister.

Gary in Texas

Use an Ohm meter and see if you are getting power thru. the resister. It may be good, so why buy another good one?

Gary in TX is right on the money. If you wired the 45' for 12V's, take that ballast resistor and throw it in the creek. Pick yourself up a 3.0 Ohm internal resisted coil for the change-over if that's what you did. If its still 6V's, that doesn't need to be in there. But it sounds to me like you converted it to 12V. If ya can't find the correct coil locally, we have em' in stock. When switching over to 12V with a 4 cylinder, you need 2.7-3.3 Ohms of resistance in the Ignition circuit. DO NOT purchase a "Universal" 12V Coil! They are only 1.8 ohms. Fine for 6 & 8  cylinders, but not 4 bangers. Visit our website. There's a lot of info there on 12V conversions...  bb-customcircuits.com
Steve@B&B

Like Steve said! You don't need the resister. You do need a 12 volt coil with an internal resistance of 2.7-3.3 ohms.  Try your local auto parts store and ask them for one. The  coil has + and - terminals marked on it. Assuming that your system is  negative ground, connect the + coil terminal to the distributor. Wire from the instrument panel connects to the - coil terminal.

No, that's not correct. The plus (+) goes to the key switch. The minus (-) goes to the Distributor on 12 volt Negative Ground. Neg Grd is to the Distributor points. Then you should be good... Sorry to correct you Dave, hope you didn't hook that up that way on your 45'. If you did, switch it around. (+) to the Distributor would be 12V Pos. Grd. Clear as mud right?
Steve@B&B

I'm already running an alternator. So I'll get the 12 volt coil and eliminate those other two parts. Makes my life a lot easier that way. Then I can finally get it starting and running on a regular basis. Then on to the next step.
Thanks,
Brad