How will i know if my ab14 ignition amp is working or working properly. Is there a way to bench test this unit ? What is the best place to relocate this amp ? . What wire gauge should i use if a relocate this (i assume that an extra wiring is needed).

thank you

 

What I have read is where it is is not a problem and if the car runs there is no problem with it. If you look for trouble on an old xjs you wont be disappointed. Lol

 

I don't think there is a way to test those. Inside it's GM 4 pin HEI module, so you can look and see if there is a test for those. They tend to either work or they don't.

Don't relocate the amp. It generates quite a bit of heat, and where it is is actually the coolest spot in the engine bay. The incomming air through the intake manifold acts as a very effective cooler. If you've ever driven a V12 in winter ( as I have) the engine block will be hot and the intake manifolds are very cold.

 

When they stop working, you'll know, as the engine will stop running and won't start until you replace the amp.

You only need to replace the HEI module. My experience has been that it's hit-or-miss on if a new module will work or not. I bought four, two of which worked and two which didn't. So I carry a working spare in the car. Being a GM part, they are fairly easy to find.

 

FWIW, I am a fan of relocating the amp to a cooler spot.

 

Were they all genuine GM parts? I have not had an aftermarket amp work yet with the V12, it needs to be the genuine GM part. I take them from the junkyard when I see them and not had any trouble with them.

 

Yes, they were all new-in-box (how "new" I don't know) GM parts. I got my money back on the two which didn't work, so it wasn't a big deal.

I've never tried an aftermarket module.

Thanks,

John