Hi

Cruising my 70RR 440 on a hot summer night and it just died, start it up again went a 1/2 mile and was dead. With the key on I put a multi-meter on the coil negative post with unilite distributor not connected and got 11.5v, then reconnected the green wire to negative and got basically nothing (35-.5v). I am assuming the photocell bit the dust but never had the experience before.

I had ohm the ballast resistor, was fine at 1.5 - also swapped out with another good one.

I replaced the coil with 2 other working ones and still no spark. As mentioned I was getting the voltage at the coil without the unilite on the negative post.

I believe it is the unilite, is there something inside to replace on them besides going with a complete ignition - module changeover. Should I be checking another failure point?

Thanks

Make sure the shutter wheel wasn't blocking the gap in the module.

http://www.youtube.com/watch?v=PSiw4thM21k

I carry a spare module for my Scampage unilite dist because I thought it took a dump but it turned out it wasn't the module but you can use the lower cost E Spark module, half the cost. I would also put in the circuit guard to prevent it from spikes.

http://www.amazon.com/Mallory-6100M-Perf...te+module+6100m

Well if you have battery voltage and the starter is turning fine,and you have no fire, then if that dizzy is an actual 'lite ' unit,most likely the light has gone out! and needs replaced, they are available,but cost close to 50$Bucks?
or just thro in a reg dizzy set it see if it runs

Unilte units are noted for the lack of living, they all die, some sooner than later Switch over to something better now

I can't in my situation, no one makes a stand alone 2.2 distributor other than the Mallory Unilite. Mine has been trouble free.

http://prestoliteperformance.com/media/i...cedure_0007.pdf

Ive had 2 Unilite dists. 1 in my 72 Mach 1. Never had a problem.. Had 1 in my 71 RR. I lost 2 modules in that 1.
Id bet your module went bad.

As stated,, they all die at some point!, The 'lite' unite work great til you have a voltage/amp spike,, or someone decide to give you a jump and for some reason the positive was the neg, deal ,
If you have one, and now you have read these post , keep one handy !! just saying!!

Mallory makes a plug in box to keep the voltage spikes from killing the eye of the distributor. I have one on my unilite. It might be worth installing when you put your new eye back in.
Matt