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It is best to route it along a ground plain such as the firewall, frame or engine block to form a shield around it.

It should be routed clear of the coil primary wires and plug wires. * Inspect the routing of the Magnetic Pickup Harness. * Make sure you are not using Solid Core wires. Try another non-adjustable light and check the timing again. Dial back timing lights are not recommended. * What kind of timing light are you using? Many lights have trouble reading the MSD's capacitive discharge multiple sparks. If your timing seems to be jumping all over the place, check the following items: Ahhhhh you see the problem don't you! If the processor is fast and is inturperting the multiple signals as 3000rpm, 1000rpm, 3000rpm, 1000rpm, how much does it delay before it flashes the strobe?Īt least that's the way it was explained to me. The 'dial back' timing lights process the signal, and use time between signals ( rpm's ) for 'when' to flash the strobe. Put your inductive light on that wire and see if they both indicate the same on the timing tab. Remove the #1 plug wire and use the cheepie timing light as your plug wire. The best check I have found on if your timing light is giving you good info or not is the ultra cheepie (non inductive) lights that plug between the sparkplug and the spark plug cable. The bad part can be that you don't know 100% for sure what your really have, an accurate flash of the strobe, or a delayed flash, or no flash because of confusing multiple signals. (does that make sense?) Anyways, that's why some work, some don't. Others may only process the first signal, and skip any that is incoming while it's processing the first.

A lesser timing light may not be able to process the signal and flash the strobe before the next signal comes in, so it figures 'too late' and just process the 'next' signal. Other lights not acquainted with the multiple strike concept may not be able to process the rapid incoming signals and flash the strobe at the 'first strike' of the coil. A MSD timing light suposedly has the circutry to filter out the multiple strikes and give accurate flashes at the first firing of the coil (which is what we want). It's kind of like going from 3000rpm to 1000rpm between cylinders firing. Even tho the mulit-strikes happen in milli-seconds, it happens fast enough to confuse the processor in the timing light. The battery clamps are color-coded, insulated, and have a strong spring to ensure a tight, safe connection.What I have heard is the multiple sparks (below 3000rpm) is what screws with the inductive timing lights. A 6-foot leads provide plenty of reach from the battery to most timing indicators. The MSD Light uses a metal inductive pickup that will not melt if accidentally touched against hot components like an exhaust manifold. This light is built to protect itself from the abuse that occurs to tools. The MSD Timing Light's heavy duty resin casing is strong, easy to clean and resistant to corrosives and most other chemicals that could get on it while you work. This rugged timing light is built to work in the toughest of environments. With a patented flash, we make it easy to see your timing scale by being up to three times brighter than standard timing lights. The light provides stable, reliable signals from 0 to 10,000 rpm so that you can be sure of your tune all the way through red-line. This MSD Timing Light is perfect for working in a garage, outside in the sun, or anywhere else you need to check your timing.