I have done several re-wires, (2) of which recently. I have not used the same supplier twice. All of them have their good and bad points, some have better information than others. Here is what I found on the kits.
Basic hot rod kit from Speedway. This was a generic kit I used on my '60 F100. It was what you paid for, everything was there and it went together pretty quick. Instructions were basic.
Kwik Wire Kit. I put this in my 1938 Chevy pickup. It was a well thought out, easy kit to install. Had good connectors, good schematics and easy to understand installation. This is probably my number one choice as the whole kit was well thought out.
Painless kit in my 1955 Chevy. This car was more of a strip car, so I did use a pro street kit with switch panel. Painless quality in my opinion is over-rated. I have used a number of their relay kits, stop light kits, etc. and have had some failures. The painless wiring kit was 21 circuits which was too many for this car. The problem with Painless is the instructions are confusing, and unless you spend an excess amount of time going over them you could have mistakes. The kit does not include any schematic that can be referenced. I don't know if I would used Painless for a full rewire again. I have also had some failures with this kit and the car has maybe 500 miles on it. Main problem is the whole turn signal circuit had a glitch somewhere and would not get power.
American Auto Wire. in my sons 1955 Chevy. This kit was well put together with pretty good instructions. The only thing I did not like is they break things down into sections, and rather than have a main instruction book, you wire things individually. Unless you are very careful mixing up components from the individual kits is very possible. But if you are meticulous it is a very good kit. This would be my #2 selection, possibly #1 depending on the situation.
I will note, that all the above cars and kits are more "hot rod" than just a straight restoration wiring install. We have items that change a kit or modify the use. These include multiple fans, after market ignitions, additional/non stock gauges, line locs, etc. So all of the kits have been modified to some extent. Each one will do the job, some are just a little better on the details than others.
