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Old 14-08-2016   #16
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Re: fiat bravo hgt turbo

Some more progress done with this nice weather lately. I bought the original hgt sensors in the end as they will fit the coupes hubs. Also have the engine in coupled up to the mounts and starting to connect stuff up. Does anyone have a diagram on which charcoal canister pipe connects to where? School boy error but forgetting to mark them!
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Old 14-08-2016   #17
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Re: fiat bravo hgt turbo

It's ok I've manage to find the original hgt charcoal canister and work it out from there.
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Old 23-09-2016   #18
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Re: fiat bravo hgt turbo

Hi all, I'm nearly at the stage of 1st start! However there's one plug which is different to where it plugs in from main loom. I've taken a couple photos. I appreciate the help.
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Old 24-09-2016   #19
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Re: fiat bravo hgt turbo

After some brain bashing with diagrams I know the 2 pin plug is the 55a Fiat code electronic control unit. The male connector lies with the hgt engine loom and on the coupe loom its replaced with the 4 pin plug on the picture. Now it's finding out what the 4 pin plug goes to! I've attached a diagram on where the male connector goes to on the hgt. Much help is appreciated.
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Old 25-09-2016   #20
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Re: fiat bravo hgt turbo

Are you converting a 20valve bravo that had a throttle cable? Or an electronic throttle.


Take a look at this wiring colour chart compare that to the wiring colours on your unknown 4way plug connector. Theres are the only two 4 way plug connectors i can find on the coupe 20v engine manual that i have.


Lambda probe and 'Front cable/fuel injection'



















Looks like your 2 way Bravo plug wiring is solid pink and solid black. I will have to dig out my hard copy of the wiring manual my digital version is pants on 20v wiring.


Quote Originally Posted by Dameincollings View Post
Hi all, I'm nearly at the stage of 1st start! However there's one plug which is different to where it plugs in from main loom. I've taken a couple photos. I appreciate the help.
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Last edited by Adrian Bravo; 25-09-2016 at 19:40.
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Old 25-09-2016   #21
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Re: fiat bravo hgt turbo

I'm converting a 147 hgt with a cabled throttle. It's not the lambda plug as lambda is plug in. I've drawn a little detail on a photo. Also a close up photo of the wiring colours on the 4pin plug. They appear to be BLACK, GREY/GREEN, GREY/BLUE AND GREY/RED going on the colour chart.
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Old 25-09-2016   #22
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Re: fiat bravo hgt turbo

just to be clear I have never done or witnessed a turbo conversion in person. Im just trying to help with the information infront of me.


So it looks like the 4 way coupe connector is the '149D Front Cable/Fuel injection cable connection' you can buy these AMP connectors and pins new easily I have made them up before.


HV 141 - Grey / Green
N 29 - Black
HL 58 - Grey / Blue
HR 57 - Grey / red


I found a page in the coupe manual showing two of the pins are part of the CODE system.


Wire HV (Grey / Green) in connector 149D
goes from;
pin 6 on part 284 The code box
to;
pin 47 on part 141 the engine ECU


Wire N (Black) in connector 149D
goes from;
Pin 4 on part 284 The code box
to;
Common Ground





This page explains the part numbering and locations;



The next two pins are on even more blured pages :S Hope I got these 100% correct.


Wire HR (Grey/Red) in connector 149D
Goes from;
Part 57 - Oil Pressure sensor
to;
Oil Pressure guage on Dash


Wire HL (Grey / blue) in connector 149D
Goes from;
Part 58 - Engine Oil Temperature Sensor
to;
Engine Oil Temperature Guage on Dash









Have you traced through all the pins on both the 20pin Bravo and Coupe connector? there may be differences.


Hope this helps. I will try and confirm what the 2 way Bravo connector goes to. (probably code box as you alread said)


Quote Originally Posted by Dameincollings View Post
I'm converting a 147 hgt with a cabled throttle. It's not the lambda plug as lambda is plug in. I've drawn a little detail on a photo. Also a close up photo of the wiring colours on the 4pin plug. They appear to be BLACK, GREY/GREEN, GREY/BLUE AND GREY/RED going on the colour chart.

Last edited by Adrian Bravo; 25-09-2016 at 20:48.
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Old 26-09-2016   #23
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Re: fiat bravo hgt turbo

So by the look of it i can get a 4pin amp connector and connect grey/green to the pink and black to black that should link up the code system. then leave the oil temp and pressure blanked off in the plug. I will buy oil temp and pressure gauges for my pods but then i assume they will be wired in differently.
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Old 26-09-2016   #24
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Re: fiat bravo hgt turbo

Yeah thats how I would do it if I wasnt fitting the coupe instrument cluster.


Some people have fitted the coupe cluster to the Bravo but I have no idea how hard it is. Looks like the little warning symbols at the bottom would be obstructed





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Old 26-09-2016   #25
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Re: fiat bravo hgt turbo

Ideal i'm glad we've came to a conclusion. Ive ordered the amp connector and just the 20pin to play with now . I was thinking of the coupes speedo but like you mentioned didnt know how hard to fit so i went for a triple pod on the a pillar a customized.
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Old 05-10-2016   #26
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Re: fiat bravo hgt turbo

20pin all sorted after whole day of diagram crawling, i want to thank adrianbravo for his input . Now its figuring out the 149B 3pin plug and the 55B 2 pin plug! pictures attached will be greatful for anyones input. Also pillar pods finished being flocked looks great.
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Old 16-10-2016   #27
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Re: fiat bravo hgt turbo

Really stuck now on the coupe 149B and bravos 55B plug! The 149B plug is something to do with the timing variator relay but dont no where to wiring it in to and the 55B plug is something to do with the vapour canister but also dont no where to wiring into! really need some help please!!
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Old 16-10-2016   #28
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Re: fiat bravo hgt turbo

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Old 16-10-2016   #29
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Re: fiat bravo hgt turbo

I'm away at the moment so I can't check my folders. But if you download the wiring diagrams you should be able to work it out.
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Old 16-10-2016   #30
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Re: fiat bravo hgt turbo

Not a problem. I do have the diagrams for coupe and bravo and I know what the wires are in both plugs but I'm just confused as I don't have the plugs on my loom to plug in the coupe 149B and and bravos 55B plug. The only wiring I used from the coupe was the loom from ecu to engine. The rest is from the bravo! Perhaps I've missed more parts Of the loom!
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