underhood fuse box

[1990LTD]

Looks like I'm gonna take the plunge.




any wisdom you with to impart would be greatly appreciated. i don't yet have an evtm for my car so i'm without wiring diagrams/fuse sizes/wire gauges etc but i'm curious what you guys are running through yours?

[85crownHPP]

headlights, fog lights, everything fed off the solenoid in mine. just make sure you wire everything right and you make good connections!

[87gtVIC]

Pete and I are using different fuses for the same accessories in some cases and both cars have not blown a single fuse to date that I know of so it seems there is some flexibility in choosing how to fuse your box up. In my install thread I show most of my fuse values as well as what those fuses are protecting. Be careful taking the panel apart and rewiring it..the little tabs that hold in the spade connectors like to break on you and then that slot in the fuse box is pretty worthless unless you come up with some way to secure it.

I recommend writing the entire fuse box circuit out on paper multiple times making sure that your wiring is correct. Looks as if you may have everything you need in that one fuse box as it has a lot of fuses an relays already in use. That gives you a bunch of flexibility when it comes tome to rewire it to your liking.

[1990LTD]

It'll be a good spot for the headlight relays when I get to installing it, I think. I have the box on the other fender so I'm probably going to leave those relays over there

[1990LTD]

got a link to your thread dave?

[87gtVIC]

Ahh it was in my RR thread. Page 22

http://www.grandmarq.net/vb/showpost...&postcount=431

[1990LTD]

ALL of those wires are fusible links? Goddamn.

[87gtVIC]

well only from ring terminal to the black cylindrical thing on the wires...after that they are normal wires.

[1990LTD]

Am I reading correctly that there's just one 16ga wire powering the fuse box under the steering column?

[1990LTD]

also - the fuse box has common power, right? one big fat battery cable in and lots of 12-16ga wire coming out the bottom distributing power?


would I be fine leaving wiring intact past where I find the fusible links? Connecting the new fused wire where I cut the fusible link out.

I foresee lots of butt splice connectors and heat shrink wrap..

[87gtVIC]

One thing you have to remember while looking at the wiring diagram is that only the gauge of the fusiblelink is mentioned. A fusible link is 4gauge smaller than the wire it is protecting. So a 16 gauge fuse link is protecting a 12 gauge wire.

And yes, loop a battery cable from the solenoid, or battery to the fuse box...and all your distribution s are smaller gauges.

[91waggin]

My .02:

DON'T do this without an EVTM. You're asking for trouble, since you don't know what fuse links are what values.

Looks like this guy will ship to the great white north:
http://cgi.ebay.com/ebaymotors/1990-...sQ5fLiterature

The EVTM has become one of my most-used tools, as I continue to do electromods. For as little as it costs, it can save you a world of problems.

[85crownHPP]

I can 'scan' mine to get you the power distribution diagrams if you like

[91waggin]

But having your own is waaaay better in the long run. Especially considering how cheap they are.

[1987cp]

My .02:

DON'T do this without an EVTM. You're asking for trouble, since you don't know what fuse links are what values.

Isn't it just as easy to select fuses that are consistent with the gauge of the feed wires? Or better still, choose fuses according to the specific fuse link they're replacing? Seems to me it'd be much more trouble to look everything up in a book, but maybe that's just me.