M20C Ignition Harness O-360 w/bendix mags

[LucasC]

Time to change my ignition harness. Many of the plug wire shields have pulled out of the magneto caps. Wondering which manufacturer you guys have had good luck with? Im looking at either the champion slick harness for bendix mags which says that they dont need elbows or the kelly aerospace harness which has the option of elbows or not. What you think?

[Don Heene]

I replaced mine with Kelly Aerospace from Aircraft Spruce at my last annual.  Also overhauled my Bendix Mags at the same time.  Works very good no 90 bends.  

[Hank]

I used Kelly, and ordered the harness with 90° tips installed. Delivery took a little longer, but it was worth it. The outer insulation was coming apart where the wires bent tomgo onto thr plugs. When I took the old one off, I was shicked to see this under the battery box

Here's what it looks like now.

Fortunately it's not a difficult job. Despite two magnetos and 8 leads, it was easier than replacing the harness on my Ford Ranger V6--no hidden clamps, pliers not needed to pull leads from the plugs, no scrapes or bruises, no oil and dirt up to bith elbows . . . .

[Guest]

2 hours ago, Hank said:

I used Kelly, and ordered the harness with 90° tips installed. Delivery took a little longer, but it was worth it. The outer insulation was coming apart where the wires bent tomgo onto thr plugs. When I took the old one off, I was shicked to see this under the battery box

Here's what it looks like now.

Fortunately it's not a difficult job. Despite two magnetos and 8 leads, it was easier than replacing the harness on my Ford Ranger V6--no hidden clamps, pliers not needed to pull leads from the plugs, no scrapes or bruises, no oil and dirt up to bith elbows . . . .

Hank,

Watch that the tywrap on the heater Scat duct doesn’t chaf through the oil return line.

Clarence

[LucasC]

Kelly it is. Thanks guys. 

[onegreen]

On 12/8/2018 at 10:02 AM, Hank said:

I used Kelly, and ordered the harness with 90° tips installed. Delivery took a little longer, but it was worth it. The outer insulation was coming apart where the wires bent tomgo onto thr plugs. When I took the old one off, I was shicked to see this under the battery box

Here's what it looks like now.

Fortunately it's not a difficult job. Despite two magnetos and 8 leads, it was easier than replacing the harness on my Ford Ranger V6--no hidden clamps, pliers not needed to pull leads from the plugs, no scrapes or bruises, no oil and dirt up to bith elbows . . . .

Hank

Just found this in my search . I was wondering how the 90 degree elbows fit on the top under the dog house covers.
 

Thanks

Mark

[Hank]

9 hours ago, onegreen said:

Hank

Just found this in my search . I was wondering how the 90 degree elbows fit on the top under the dog house covers.
 

Thanks

Mark

Like this:

[onegreen]

Thanks for the pictures Hank. They fit nicely under the doghouse . 

[jwarren2]

I have a question,,,, what is the purpose of the line of silicone running down the length of the scat tubing? Never seen that before. Thanks.

[Hank]

3 hours ago, jwarren2 said:

I have a question,,,, what is the purpose of the line of silicone running down the length of the scat tubing? Never seen that before. Thanks.

Keeps it from rubbing on the cowl cheek, saving the sheet metal and the tubing. 

[MikeOH]

Watch the wear on the oil drain back line from the nylon tie-wrap.