How to get perfectly straight HT leads?

[Funkychiken]

Hi All, hoping you can help.

I've always struggled to get leads in a stright line, there's no PE set for it, If I put glue down, it makes a mess, and the cables seem to have a mind of their own.

so, how do you guys do it? this is the Ferarri Testarossa head and HT leads, I'm going after this look.

 

My headers are ready, and I have cable, please help!

[Casey]

I would recommend modifying a set (or multiple sets if necessary) of photoetched plug wiring looms, so they closely match the real thing. If you measure carefully, anchor each piece solidly, and match the O.D. of the wires to the I.D. (well, allowing for an interference fit at least) you should be able to replicate what you desire.

*edit* Alternatively, consider using a soft rod instead of coated wire. It will bend, yet retain its shape better IMHO. You'd need to coat or paint each wire before installation, but since they need only pass the visual test, it matters not what's inside.

Edited November 20, 2020 by Casey

[Ace-Garageguy]

What Casey said.

And I believe you need smaller wire.

[Straightliner59]

11 hours ago, Ace-Garageguy said:

And I believe you need smaller wire.

Without a doubt!

[Funkychiken]

19 hours ago, Casey said:

I would recommend modifying a set (or multiple sets if necessary) of photoetched plug wiring looms, so they closely match the real thing. If you measure carefully, anchor each piece solidly, and match the O.D. of the wires to the I.D. (well, allowing for an interference fit at least) you should be able to replicate what you desire.

*edit* Alternatively, consider using a soft rod instead of coated wire. It will bend, yet retain its shape better IMHO. You'd need to coat or paint each wire before installation, but since they need only pass the visual test, it matters not what's inside.

All thanks for the replies, Casey, do you have a picture of what you mean by Photoetch plug wiring loom?

 

when you say anchor each piece - do you mean with super glue?

 

what do you mean by match the Outer Diameter to the Inner Diameter?

[TimKustom]

That will be a fun one to wire like that. It can be done when you are very careful and have patience. First start with a quality wire. I recommend the Detail Master wire. I've used them all from every aftermarket to Radio Shack strapping wire. Detail Master's is the best as it was custom made for the model car hobby to be in scale. Next, as others said you probably want some photo etch wire looms. Get those from Detail Master or Model Car Garage makes some nice one as well. So on to getting the wires on the engine...

You will need to drill out where the wire starts and where the wire goes. It's best to have the holes as deep as possible and of the correct size so the wire fits snuggly. After that is done, now it's time to get the wire straight. Pull it between your fingers and rotate it. Once it is straight, use your exacto to cut lengths longer than what you will need. Then in the case of the Testarossa, start at the distributor and glue them in (superglue or 5 minute epoxy), making sure they stay as straight as possible. Once the glue is dry, slide on the looms. Now it's time to bend the wire.

Start with the one closest to the distributor and carefully bend the wire to the shape in your picture. Then cut the length so you have enough to put into the hole you previously drilled into the cylinder head. Thread it into that hole. If its snug, you likely won't need any glue. I like clear enamel for this part since it sets up slow and will hold without showing. Repeat for each wire. Use the exacto and fine tweezers to keep everything lined up.

It takes practice and perseverance to do them real nice. Don't give up if it's not perfect. Just try to make your next one better. Hope this helps!

https://www.detailmaster.com/products/dm-2360-wire-looms-1?_pos=3&_sid=8f5c7aa0d&_ss=r

https://www.detailmaster.com/products/dm-1103-red-detail-wire-0075-2ft?_pos=10&_sid=7ca100220&_ss=r