Geoff55

Hello,

Very basic question.
I am looking to put a '99 LS1/4L60 setup in my '55 chevy convertible.\I want to mount the ECU under the front seat, so I would like an extended harness like Painless offers.

I'm going to leave everything stock LS1, but don't really want to use the old wiring. Looking for the best quality/price LS1 harness I can get.
Is the Painless version with the extended length worth the money?

Any other harness brand suggestions?

Thanks.

parks450

iTrader: (17)

Painless is exactly as it sounds. Quality has a price though. I recently did a ls1 swap in my 4x4 s10 and used a harness custom built by CPW (current performance wiring). Try them they are awesome, wiring was top notch.

chuckd71

iTrader: (23)

I didn't use them but PSI posts here and answers questions, and that is worth something. I'd at least consider them for that reason alone.

psiconversion

iTrader: (5)

Our harnesses feature 4-5ft of length from the back of the engine which should get you under the seat in a 55-57 Chevy. Also, they feature a grommet seal which allows for a very clean installation through the firewall that looks factory. Cost for that harness is $499, features a fuse/relay center and 100% new gm delphi connectors with TXL/GXL wire.

Jon
PSI

RATBOX

iTrader: (26)

Speartech

LS1MCSS

iTrader: (18)

I say use PSI. They are the only sponcer that will answer a harness question anymore.

46Coupe

iTrader: (5)

PSI for the customer support, quick product delivery and high quality.
I'll never use another brand.

Geoff55

I have to admit PSI is sure looking good. I've had some good PM's from others, too.

Painless tech support wasn't too friendly when I called.

bmf5150

I went with S&P but mine was expensive if I had to do it again I would go with psi

bad6as

iTrader: (17)

got mine off ebay. no issues

itsslow98

iTrader: (18)

PSI by far, great product, even better customer support. Search my name I made a thread about there harness and the great experience i had with Jon.

Geoff55

Thanks, I read your thread and you were in the exact same boat as me.
After my kinda "painful" experience getting some basic answers from Painless tech support, I decided not to use them.

After everything I've read, Jon and PSI are gonna get my business for sure.

Good customer service is EVERYTHING nowadays.

thenova70ss

iTrader: (2)

PSI is the best i have the harness and ECM on my Nova and it all works GREAT and any time i need to talk to them all i had to do was PM are give them a call.