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FDP Forum / Fender Amps: Vintage (before 1985) / Heyco original Strain Relief Bushing Size


USA / Sesame St.

Apr 30th, 2017 10:59 AM   Edit   Profile  

Does anyone know what the correct Heyco strain relief bushing number is that fits the original Fender chassis hole without having to enlarge the hole to fit the bushing?

The original Heyco part no. 6P-1 is no longer available. I would guess there has be an modern day equivalent part number that's the same size.

Contributing Member

So. Cal. USA

May 1st, 2017 10:06 AM   Edit   Profile  

The P-H1300 in the page below should work just dandy. Sizes are given so you can measure.

When I change form a 2 conductor to three conductor I most times re-use the strain relief and modify the saddle (enlarge) with a little heat from a soldering iron. A small round rat tail file will do it too.

Strain relief

(This message was last edited by Hammond101 at 01:57 PM, May 1st, 2017)


Cincinnati, USA

May 1st, 2017 11:17 AM   Edit   Profile  

I too started to reuse them after vintage jon gave us the better solution of using the iron to enlarge them. RIP jon!


USA / Sesame St.

May 1st, 2017 12:58 PM   Edit   Profile  

The stock cord Fender used was a 18/2 SJT, pretty light duty but did the job. I have used 16/3 SJTW cords for replacements with the original bushing, no modification to the chassis hole or enlarging the bushing with a file or iron and that 16/3 fits. The trick is to place the bushing were you want it and squeeze it so that the little insert piece that's attached to the bushing is even and level with the rest of the bushing. I use a small pair of channel locks pliers. The ends of the jaws are flat, I wrap electrical tape around them to protect the nylon bushing from the metal jaws. Squeeze for several minutes, it will compress the jacket of the cord and take on the internal shape of the bushing and allow it to be inserted into the chassis hole. It can be removed by squeezing it from the inside, a little wiggling and pushing and it will come right out. No damage to the bushing. I've removed them and inspected the cord and there is no damage to the internal wires or insulation. The outer jacket is tuff and wants to resist being compressed into the bushing so it's a fight all the way. This is why squeezing and holding it for several minutes in that position will work, it stretches it enough to take on the new shape of the bushing and doesn't resist as much.

(This message was last edited by roadhog96 at 06:07 PM, May 1st, 2017)

FDP Forum / Fender Amps: Vintage (before 1985) / Heyco original Strain Relief Bushing Size

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