antenna remote current output

I have one of PCA's tuners which seems nice enough but the reception on my car sucks so Im going for an antenna amp. The trouble is, how much current can I draw from the antenna remote line, bearning in mind that I have a tuner attached too.

On a related note, Im still getting the battery icon displayed if I turn the empeg off whilst the engine is running (led pulsing) and then back on again.

1A total IIRC.

Yes i have the same battery problem, and there is no chance my battery does not have enough power.

I think i am also going to get and aerial amp.

I have also found that since fitting the tuner i am getting loads of interferance from the engine at high revs.