Do you guys have any suggestions on what relays to use for an EFI swap? I have used the relatively large GM/Bosch type with the weather-pak connections in the past for controlling everything from fans to starter solenoid by-pass. These have been around for about 20 years and I was hoping you guys would have an up-to-date solution. I want to build a wiring harness for fuel pumps, fans, and starter control (not high side).

 

For what its worth... Im going to use one of the "power centers" from my doner car (99 Z28). They use the smaller type relays if I remember correctly. And the leads are already there...Im going to just use the existing wires and run them were I need them. Its compact and organized. Plus the lid is pre-labled for the things I want. If you want to keep it hidden, or make it look better, it looks pretty easy to stuff it somewhere or make a nice aluminum cover for it or something.

I wanted to go with some Painless stuff...but its usually pretty expensive for what you're getting. Just my opinion.

Justin

 

I am using Bosch relays....mostly 30 amps and some 50 amps

 

Thanks. I guess I'll grab a block of them from a donor car or truck and replace the wiring in the connector as required with the weather-pak. Thanks!

 

I also used a donor car underhood fuse block, it was out of a 96 V6 camaro. But I saw the same fuse block on mid 80`s to mid 90`s 3100,3400,and 3800 series V6 midsize GM cars so they should be easy to find. It is nice and compact and easy to mount. It has 8 relay spots and I think it has 16 fuses. I`ll try to remember to post some pics whe I get home.

 

Heres a couple of pics of what my fuse/relay center looks like.

 

These are more compact than the Bosch ones I was planning to use. This a really nice set up. Thanks for the pics - the wheels are turning now.